9ffc93f203c18a70623f21950f1dd473c9ec48cd |
|
28-Mar-2012 |
David Howells <dhowells@redhat.com> |
Remove all #inclusions of asm/system.h Remove all #inclusions of asm/system.h preparatory to splitting and killing it. Performed with the following command: perl -p -i -e 's!^#\s*include\s*<asm/system[.]h>.*\n!!' `grep -Irl '^#\s*include\s*<asm/system[.]h>' *` Signed-off-by: David Howells <dhowells@redhat.com>
|
77dfce076cbd76c04e90abff188d058cdbff78dd |
|
25-Nov-2011 |
Cong Wang <amwang@redhat.com> |
scsi: remove the second argument of k[un]map_atomic() Signed-off-by: Cong Wang <amwang@redhat.com>
|
5c10007560589a2335a77cbc92347b1474518296 |
|
29-Dec-2010 |
Julia Lawall <julia@diku.dk> |
[SCSI] gdth: Add missing call to gdth_ioctl_free Add missing call to gdth_ioctl_free before aborting. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression buf,ha,len,addr,E; @@ buf = gdth_ioctl_alloc(ha, len, FALSE, &addr) ... when != false buf != NULL when != true buf == NULL when != \(E = buf\|buf = E\) when != gdth_ioctl_free(ha, len, buf, addr) *return ...; // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
|
f281233d3eba15fb225d21ae2e228fd4553d824a |
|
16-Nov-2010 |
Jeff Garzik <jeff@garzik.org> |
SCSI host lock push-down Move the mid-layer's ->queuecommand() invocation from being locked with the host lock to being unlocked to facilitate speeding up the critical path for drivers who don't need this lock taken anyway. The patch below presents a simple SCSI host lock push-down as an equivalent transformation. No locking or other behavior should change with this patch. All existing bugs and locking orders are preserved. Additionally, add one parameter to queuecommand, struct Scsi_Host * and remove one parameter from queuecommand, void (*done)(struct scsi_cmnd *) Scsi_Host* is a convenient pointer that most host drivers need anyway, and 'done' is redundant to struct scsi_cmnd->scsi_done. Minimal code disturbance was attempted with this change. Most drivers needed only two one-line modifications for their host lock push-down. Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
f63ae56e4e97fb12053590e41a4fa59e7daa74a4 |
|
08-Oct-2010 |
Dan Carpenter <error27@gmail.com> |
[SCSI] gdth: integer overflow in ioctl gdth_ioctl_alloc() takes the size variable as an int. copy_from_user() takes the size variable as an unsigned long. gen.data_len and gen.sense_len are unsigned longs. On x86_64 longs are 64 bit and ints are 32 bit. We could pass in a very large number and the allocation would truncate the size to 32 bits and allocate a small buffer. Then when we do the copy_from_user(), it would result in a memory corruption. CC: stable@kernel.org Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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6038f373a3dc1f1c26496e60b6c40b164716f07e |
|
15-Aug-2010 |
Arnd Bergmann <arnd@arndb.de> |
llseek: automatically add .llseek fop All file_operations should get a .llseek operation so we can make nonseekable_open the default for future file operations without a .llseek pointer. The three cases that we can automatically detect are no_llseek, seq_lseek and default_llseek. For cases where we can we can automatically prove that the file offset is always ignored, we use noop_llseek, which maintains the current behavior of not returning an error from a seek. New drivers should normally not use noop_llseek but instead use no_llseek and call nonseekable_open at open time. Existing drivers can be converted to do the same when the maintainer knows for certain that no user code relies on calling seek on the device file. The generated code is often incorrectly indented and right now contains comments that clarify for each added line why a specific variant was chosen. In the version that gets submitted upstream, the comments will be gone and I will manually fix the indentation, because there does not seem to be a way to do that using coccinelle. Some amount of new code is currently sitting in linux-next that should get the same modifications, which I will do at the end of the merge window. Many thanks to Julia Lawall for helping me learn to write a semantic patch that does all this. ===== begin semantic patch ===== // This adds an llseek= method to all file operations, // as a preparation for making no_llseek the default. // // The rules are // - use no_llseek explicitly if we do nonseekable_open // - use seq_lseek for sequential files // - use default_llseek if we know we access f_pos // - use noop_llseek if we know we don't access f_pos, // but we still want to allow users to call lseek // @ open1 exists @ identifier nested_open; @@ nested_open(...) { <+... nonseekable_open(...) ...+> } @ open exists@ identifier open_f; identifier i, f; identifier open1.nested_open; @@ int open_f(struct inode *i, struct file *f) { <+... ( nonseekable_open(...) | nested_open(...) ) ...+> } @ read disable optional_qualifier exists @ identifier read_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; expression E; identifier func; @@ ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off) { <+... ( *off = E | *off += E | func(..., off, ...) | E = *off ) ...+> } @ read_no_fpos disable optional_qualifier exists @ identifier read_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; @@ ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off) { ... when != off } @ write @ identifier write_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; expression E; identifier func; @@ ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off) { <+... ( *off = E | *off += E | func(..., off, ...) | E = *off ) ...+> } @ write_no_fpos @ identifier write_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; @@ ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off) { ... when != off } @ fops0 @ identifier fops; @@ struct file_operations fops = { ... }; @ has_llseek depends on fops0 @ identifier fops0.fops; identifier llseek_f; @@ struct file_operations fops = { ... .llseek = llseek_f, ... }; @ has_read depends on fops0 @ identifier fops0.fops; identifier read_f; @@ struct file_operations fops = { ... .read = read_f, ... }; @ has_write depends on fops0 @ identifier fops0.fops; identifier write_f; @@ struct file_operations fops = { ... .write = write_f, ... }; @ has_open depends on fops0 @ identifier fops0.fops; identifier open_f; @@ struct file_operations fops = { ... .open = open_f, ... }; // use no_llseek if we call nonseekable_open //////////////////////////////////////////// @ nonseekable1 depends on !has_llseek && has_open @ identifier fops0.fops; identifier nso ~= "nonseekable_open"; @@ struct file_operations fops = { ... .open = nso, ... +.llseek = no_llseek, /* nonseekable */ }; @ nonseekable2 depends on !has_llseek @ identifier fops0.fops; identifier open.open_f; @@ struct file_operations fops = { ... .open = open_f, ... +.llseek = no_llseek, /* open uses nonseekable */ }; // use seq_lseek for sequential files ///////////////////////////////////// @ seq depends on !has_llseek @ identifier fops0.fops; identifier sr ~= "seq_read"; @@ struct file_operations fops = { ... .read = sr, ... +.llseek = seq_lseek, /* we have seq_read */ }; // use default_llseek if there is a readdir /////////////////////////////////////////// @ fops1 depends on !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier readdir_e; @@ // any other fop is used that changes pos struct file_operations fops = { ... .readdir = readdir_e, ... +.llseek = default_llseek, /* readdir is present */ }; // use default_llseek if at least one of read/write touches f_pos ///////////////////////////////////////////////////////////////// @ fops2 depends on !fops1 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read.read_f; @@ // read fops use offset struct file_operations fops = { ... .read = read_f, ... +.llseek = default_llseek, /* read accesses f_pos */ }; @ fops3 depends on !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier write.write_f; @@ // write fops use offset struct file_operations fops = { ... .write = write_f, ... + .llseek = default_llseek, /* write accesses f_pos */ }; // Use noop_llseek if neither read nor write accesses f_pos /////////////////////////////////////////////////////////// @ fops4 depends on !fops1 && !fops2 && !fops3 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read_no_fpos.read_f; identifier write_no_fpos.write_f; @@ // write fops use offset struct file_operations fops = { ... .write = write_f, .read = read_f, ... +.llseek = noop_llseek, /* read and write both use no f_pos */ }; @ depends on has_write && !has_read && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier write_no_fpos.write_f; @@ struct file_operations fops = { ... .write = write_f, ... +.llseek = noop_llseek, /* write uses no f_pos */ }; @ depends on has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read_no_fpos.read_f; @@ struct file_operations fops = { ... .read = read_f, ... +.llseek = noop_llseek, /* read uses no f_pos */ }; @ depends on !has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; @@ struct file_operations fops = { ... +.llseek = noop_llseek, /* no read or write fn */ }; ===== End semantic patch ===== Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Julia Lawall <julia@diku.dk> Cc: Christoph Hellwig <hch@infradead.org>
|
c45d15d24eb2b49bf734e1e5e7e103befb76b19b |
|
02-Jun-2010 |
Arnd Bergmann <arnd@arndb.de> |
scsi: autoconvert trivial BKL users to private mutex All these files use the big kernel lock in a trivial way to serialize their private file operations, typically resulting from an earlier semi-automatic pushdown from VFS. None of these drivers appears to want to lock against other code, and they all use the BKL as the top-level lock in their file operations, meaning that there is no lock-order inversion problem. Consequently, we can remove the BKL completely, replacing it with a per-file mutex in every case. Using a scripted approach means we can avoid typos. file=$1 name=$2 if grep -q lock_kernel ${file} ; then if grep -q 'include.*linux.mutex.h' ${file} ; then sed -i '/include.*<linux\/smp_lock.h>/d' ${file} else sed -i 's/include.*<linux\/smp_lock.h>.*$/include <linux\/mutex.h>/g' ${file} fi sed -i ${file} \ -e "/^#include.*linux.mutex.h/,$ { 1,/^\(static\|int\|long\)/ { /^\(static\|int\|long\)/istatic DEFINE_MUTEX(${name}_mutex); } }" \ -e "s/\(un\)*lock_kernel\>[ ]*()/mutex_\1lock(\&${name}_mutex)/g" \ -e '/[ ]*cycle_kernel_lock();/d' else sed -i -e '/include.*\<smp_lock.h\>/d' ${file} \ -e '/cycle_kernel_lock()/d' fi Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: linux-scsi@vger.kernel.org Cc: "James E.J. Bottomley" <James.Bottomley@suse.de>
|
2c076eea6d3005c54f6e7be5938477fdc7027686 |
|
11-Aug-2010 |
Roel Kluin <roel.kluin@gmail.com> |
gdth: unmap ccb_phys when scsi_add_host() fails in gdth_eisa_probe_one() unmap ccb_phys as well when scsi_add_host() fails Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Achim Leubner <achim_leubner@adaptec.com> Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
f4927c45beda9a70e5c3bda0bd9f12b4f713c00b |
|
27-Apr-2010 |
Arnd Bergmann <arnd@arndb.de> |
scsi: Push down BKL into ioctl functions Push down the bkl into ioctl functions on the scsi layer. [jkacur: Forward declaration missing ';'. Conflicting declaraction in megaraid.h changed Fixed missing inodes declarations] Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: John Kacur <jkacur@redhat.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
|
6ce00cae684e7c6310e14634320184ca3c011750 |
|
11-Mar-2010 |
Roel Kluin <roel.kluin@gmail.com> |
[SCSI] gdth: fix buffer overflow This allows i == MAXHA, which is out of range Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
|
5a0e3ad6af8660be21ca98a971cd00f331318c05 |
|
24-Mar-2010 |
Tejun Heo <tj@kernel.org> |
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
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1fe6dbf4d0afba52ad0249f398e6296a1433a004 |
|
04-Jan-2010 |
Dave Jones <davej@redhat.com> |
[SCSI] gdth: Convert to use regular kernel types. converted using this script.. perl -p -i -e 's|ulong32|u32|g' drivers/scsi/gdth* perl -p -i -e 's|ulong64|u64|g' drivers/scsi/gdth* perl -p -i -e 's|ushort|u16|g' drivers/scsi/gdth* perl -p -i -e 's|unchar|u8|g' drivers/scsi/gdth* perl -p -i -e 's|ulong|unsigned long|g' drivers/scsi/gdth* perl -p -i -e 's|PACKED|__attribute__((packed))|g' drivers/scsi/gdth* sha1sum of the generated code was identical before and after. Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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690e744869f3262855b83b4fb59199cf142765b0 |
|
20-Oct-2009 |
Dave Jones <davej@redhat.com> |
[SCSI] gdth: Prevent negative offsets in ioctl CVE-2009-3080 A negative offset could be used to index before the event buffer and lead to a security breach. Signed-off-by: Dave Jones <davej@redhat.com> Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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284901a90a9e0b812ca3f5f852cbbfb60d10249d |
|
07-Apr-2009 |
Yang Hongyang <yanghy@cn.fujitsu.com> |
dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) Replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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6a35528a8346f6e6fd32ed7e51f04d1fa4ca2c01 |
|
07-Apr-2009 |
Yang Hongyang <yanghy@cn.fujitsu.com> |
dma-mapping: replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64) Replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64) Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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ced7172ad94713f9023a3c279082402ac7750ba8 |
|
22-Nov-2008 |
Al Viro <viro@ftp.linux.org.uk> |
gdth section fixes PCI side of driver should be devinit, not init Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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242f9dcb8ba6f68fcd217a119a7648a4f69290e9 |
|
14-Sep-2008 |
Jens Axboe <jens.axboe@oracle.com> |
block: unify request timeout handling Right now SCSI and others do their own command timeout handling. Move those bits to the block layer. Instead of having a timer per command, we try to be a bit more clever and simply have one per-queue. This avoids the overhead of having to tear down and setup a timer for each command, so it will result in a lot less timer fiddling. Signed-off-by: Mike Anderson <andmike@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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46787b481be00d5443d385480d12470728406cf4 |
|
16-May-2008 |
Jonathan Corbet <corbet@lwn.net> |
gdth: cdev lock_kernel() pushdown Signed-off-by: Jonathan Corbet <corbet@lwn.net>
|
a85591fd0baf4ed3f03ee1aaac6a985e400cf089 |
|
05-May-2008 |
James Bottomley <James.Bottomley@HansenPartnership.com> |
[SCSI] gdth: fix Error: Driver 'gdth' is already registered, aborting... This message appears on modprobe/rmmod/modprobe of the driver. It's caused because if the driver has no instances, it returns an error from gdth_init, which causes the module to fail to load. Unfortunately, the module's pci driver is still registered at this point. Fix this by making gdth behave like a modern driver and insert even if it doesn't find any instances (in case of hot plug or software driven binding). Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
|
2d6f0d0cd94f9b8b24102300d8dd9cbbd1688826 |
|
05-May-2008 |
James Bottomley <James.Bottomley@HansenPartnership.com> |
[SCSI] gdth: fix timer handling The global timer handling is problematic in that if someone unbinds a PCI gdth instance, the BUG_ON() in the timer will cause a panic. Fix this by making the timer start and stop depending on whether there are instances present. This should also permit binding and unbinding to work. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
|
64a87b244b9297667ca80264aab849a36f494884 |
|
30-Apr-2008 |
Boaz Harrosh <bharrosh@panasas.com> |
[SCSI] Let scsi_cmnd->cmnd use request->cmd buffer - struct scsi_cmnd had a 16 bytes command buffer of its own. This is an unnecessary duplication and copy of request's cmd. It is probably left overs from the time that scsi_cmnd could function without a request attached. So clean that up. - Once above is done, few places, apart from scsi-ml, needed adjustments due to changing the data type of scsi_cmnd->cmnd. - Lots of drivers still use MAX_COMMAND_SIZE. So I have left that #define but equate it to BLK_MAX_CDB. The way I see it and is reflected in the patch below is. MAX_COMMAND_SIZE - means: The longest fixed-length (*) SCSI CDB as per the SCSI standard and is not related to the implementation. BLK_MAX_CDB. - The allocated space at the request level - I have audit all ISA drivers and made sure none use ->cmnd in a DMA Operation. Same audit was done by Andi Kleen. (*)fixed-length here means commands that their size can be determined by their opcode and the CDB does not carry a length specifier, (unlike the VARIABLE_LENGTH_CMD(0x7f) command). This is actually not exactly true and the SCSI standard also defines extended commands and vendor specific commands that can be bigger than 16 bytes. The kernel will support these using the same infrastructure used for VARLEN CDB's. So in effect MAX_COMMAND_SIZE means the maximum size command scsi-ml supports without specifying a cmd_len by ULD's Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
|
d35055a0f2637f29f95001a67b464fe833b09ebc |
|
28-Feb-2008 |
Boaz Harrosh <bharrosh@panasas.com> |
[SCSI] gdth: remove command accessors These are no longer necessary. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Tested-by: Joerg Dorchain: <joerg@dorchain.net> Tested-by: Stefan Priebe <s.priebe@allied-internet.ag> Tested-by: Jon Chelton <jchelton@ffpglobal.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
|
cff2680643f9288a1cd4e27c241e1da51f476d66 |
|
16-Feb-2008 |
Jeff Garzik <jeff@garzik.org> |
[SCSI] gdth: convert to PCI hotplug API - remove PCI device sort, which greatly simplifies PCI probe, permitting direct, per-HBA function calls rather than an indirect route to the same end result. - remove need for pcistr[] Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
|
4c9c8d782c8dddc5e97d33210e8a993cec6bc168 |
|
16-Feb-2008 |
Jeff Garzik <jeff@garzik.org> |
[SCSI] gdth: PCI probe cleanups, prep for PCI hotplug API conversion - Reduce uses of gdth_pci_str::pdev, preferring a local variable (or function arg) 'pdev' instead. - Reduce uses of gdth_pcistr array, preferring local variable (or function arg) 'pcistr' instead. - Eliminate lone use of gdth_pci_str::irq, using equivalent pdev->irq instead - Eliminate assign-only gdth_pci_str::io_mm Note: If the indentation seems weird, that's because a line was converted from spaces to tabs, when it was modified. Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
|
1b96f8955aaeeb05f7fb7ff548aa12415fbf3904 |
|
10-Mar-2008 |
Sven Schnelle <svens@bitebene.org> |
[SCSI] gdth: Allocate sense_buffer to prevent NULL pointer dereference Fix NULL pointer dereference during execution of Internal commands, where gdth only allocates scp, but not scp->sense_buffer. The rest of the code assumes that sense_buffer is allocated, which leads to a kernel oops e.g. on reboot (during cache flush). Signed-off-by: Sven Schnelle <svens@stackframe.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
|
ee54cc6af95a7fa09da298493b853a9e64fa8abd |
|
28-Feb-2008 |
Boaz Harrosh <bharrosh@panasas.com> |
[SCSI] gdth: fix to internal commands execution The recent patch named: [SCSI] gdth: !use_sg cleanup and use of scsi accessors has done a bad job in handling internal commands issued by gdth_execute(). Internal commands are issued with device gdth_cmd_str ready made directly to the card, without any mapping or translations of scsi commands. So here I added a gdth_cmd_str pointer to the gdth_cmndinfo private structure which is then copied directly to host. following this patch is a cleanup that removes the home cooked accessors and reverts them to regular scsi_cmnd accessors. Since they are not used anymore. After review maybe the 2 patches should be squashed together. FIXME: There is still a problem with gdth_get_info(). as reported there is a WARN_ON trigerd in dma_free_coherent() when doing: $ cat /proc/sys/gdth/0 Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Tested-by: Joerg Dorchain: <joerg@dorchain.net> Tested-by: Stefan Priebe <s.priebe@allied-internet.ag> Tested-by: Jon Chelton <jchelton@ffpglobal.com> Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
|
b31ddd31c266c2ad1b708cad0d3d8e0aa7fa2737 |
|
28-Feb-2008 |
Boaz Harrosh <bharrosh@panasas.com> |
[SCSI] gdth: bugfix for the at-exit problems gdth_exit would first remove all cards then stop the timer and would not sync with the timer function. This caused a crash in gdth_timer() when module was unloaded. So del_timer_sync the timer before we delete the cards. also the reboot notifier function would crash. So clean that up and fix the crashes. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Tested-by: Joerg Dorchain: <joerg@dorchain.net> Tested-by: Stefan Priebe <s.priebe@allied-internet.ag> Tested-by: Jon Chelton <jchelton@ffpglobal.com> Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
|
99109301d103fbf0de43fc5a580a406c12a501e0 |
|
13-Feb-2008 |
Sergio Luis <sergio@larces.uece.br> |
[SCSI] gdth: update deprecated pci_find_device Fix compilation warning in gdth.c, which was using the deprecated pci_find_device. drivers/scsi/gdth.c:645: warning: 'pci_find_device' is deprecated (declared at include/linux/pci.h:495) Changing it to use pci_get_device, instead. Signed-off-by: Sergio Luis <sergio@larces.uece.br> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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61c92814dc324b541391757062ff02fbf3b08086 |
|
12-Feb-2008 |
Boaz Harrosh <bharrosh@panasas.com> |
[SCSI] gdth: scan for scsi devices The patch: "gdth: switch to modern scsi host registration" missed one simple fact when moving a way from scsi_module.c. That is to call scsi_scan_host() on the probed host. With this the gdth driver from 2.6.24 is again able to see drives and boot. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Tested-by: Joerg Dorchain <joerg@dorchain.net> Tested-by: Stefan Priebe <s.priebe@allied-internet.ag> Tested-by: Jon Chelton <jchelton@ffpglobal.com> Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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230e886e7bd663ff2e83cdeede12d7f09b9d3711 |
|
14-Dec-2007 |
Jeff Garzik <jeff@garzik.org> |
[SCSI] gdth: kill unneeded 'irq' argument Neither gdth_get_status() nor __gdth_interrupt() need their 'irq' argument, so remove it. [akpm@linux-foundation.org: coding style fixes] Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Acked-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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45711f1af6eff1a6d010703b4862e0d2b9afd056 |
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22-Oct-2007 |
Jens Axboe <jens.axboe@oracle.com> |
[SG] Update drivers to use sg helpers Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
|
05dd7ed2c7e22d0fc3027fc27a072664bbdf8274 |
|
18-Oct-2007 |
Adrian Bunk <bunk@kernel.org> |
[SCSI] gdth: __init fixes This patch fixes the following build warnings: WARNING: vmlinux.o(.text+0xbcffdb): Section mismatch: reference to .init.text.20:gdth_search_drives (between 'gdth_pci_probe_one' and 'gdth_start_timeout') WARNING: vmlinux.o(.text+0xbd0102): Section mismatch: reference to .init.text.20:gdth_enable_int (between 'gdth_pci_probe_one' and 'gdth_start_timeout') Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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c596cc46ba1c5769866efe586daff3422bc31afe |
|
15-Oct-2007 |
Linus Torvalds <torvalds@woody.linux-foundation.org> |
scsi/gdth: fix crash in gdth_timeout if no gdth controllers found If the gdth module is loaded (or compiled in), the gdth_timeout function gets started even if no actual gdth controllers are found b the probing. That ends up not only being unnecessary, but also causes a crash due to the function blindly just trying to pick the first entry off the "gdth_instances" list, and accessing it - which obviously doesn't work if the list is empty! Noticed by Ingo Molnar. Tested-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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c8e91b0a8fc8493e3bf3efcb3c8f866e9453cf1c |
|
12-Oct-2007 |
Dhaval Giani <dhaval@linux.vnet.ibm.com> |
[SCSI] gdth: fix CONFIG_ISA build failure drivers/scsi/gdth.c: In function ‘gdth_search_dev’: drivers/scsi/gdth.c:646: warning: ‘pci_find_device’ is deprecated (declared at include/linux/pci.h:482) drivers/scsi/gdth.c: In function ‘gdth_init_isa’: drivers/scsi/gdth.c:857: error: ‘gdth_irq_tab’ undeclared (first use in this function) drivers/scsi/gdth.c:857: error: (Each undeclared identifier is reported only once drivers/scsi/gdth.c:857: error: for each function it appears in.) drivers/scsi/gdth.c: In function ‘gdth_copy_internal_data’: drivers/scsi/gdth.c:2362: warning: unused variable ‘sg’ Looking into the code I notice that gdth_irq_tab is not declared with CONFIG_ISA=y and !CONFIG_EISA. The values seem to be same in 2.6.23 (I am not sure why it has been put with #ifdefs in -mm) so I have just modified the #ifdef to take care of CONFIG_ISA as well. Signed-off-by: Dhaval Giani <dhaval@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
3892d88ae6fb186ff6205f764213b556d70800b0 |
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02-Oct-2007 |
Boaz Harrosh <bharrosh@panasas.com> |
[SCSI] gdth: !use_sg cleanup and use of scsi accessors gdth_execute() will issue an internal, none scsi-standard commands onto __gdth_queuecommand(). Since it is not recommended to set struct scsi_cmnd IO members in llds, gdth now uses internal IO members for IO. In the case of gdth_execute() these members will be set properly. In case the command was issued from scsi-ml (by gdth_queuecommand) they will be set from scsi IO accessors. * define gdth IO accessors and use them throughout the driver. * use an sg-of-one in gdth_execute() and fix gdth_special_cmd() accordingly. * Clean the not use_sg code path and company Signed-off-by Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
f842b64e0ffbcc9ce48a3bf799d0b005094107c1 |
|
02-Oct-2007 |
Boaz Harrosh <bharrosh@panasas.com> |
[SCSI] gdth: Move members from SCp to gdth_cmndinfo, stage 2 - Cleanup the rest of the scsi_cmnd->SCp members and move them to gdth_cmndinfo: SCp.this_residual => priority SCp.buffers_residual => timeout SCp.Status => status and dma_dir SCp.Message => info SCp.have_data_in => volatile wait_for_completion SCp.sent_command => OpCode SCp.phase => phase - Two more members will be naturally removed in the !use_sg cleanup TODO: What is the meaning of gdth_cmndinfo.phase? (rhetorically) Signed-off-by Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
3058d5de47ce09ac0e531290566937c7d94d0653 |
|
02-Oct-2007 |
Boaz Harrosh <bharrosh@panasas.com> |
[SCSI] gdth: Setup proper per-command private data - scsi_cmnd and specifically ->SCp of, where heavily abused with internal meaning members and flags. So introduce a new struct gdth_cmndinfo, put it on ->host_scribble and define a gdth_cmnd_priv() accessor to retrieve it from a scsi_cmnd. - The structure now holds two members: internal_command - replaces the IS_GDTH_INTERNAL_CMD() croft. sense_paddr - which was a 64-bit spanning on 2 32-bit members of SCp. More overloaded members from SCp and scsi_cmnd will be moved in a later patch (For easy review). - Split up gdth_queuecommand to an additional internal_function. The later is the one called by gdth_execute(). This will be more evident later in the scsi accessors patch, but it also facilitates in the differentiation between internal_command and external. And the setup of gdth_cmndinfo of each command. Signed-off-by Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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884f7fba09646714f94d945162e698f0822a6fdd |
|
02-Oct-2007 |
Boaz Harrosh <bharrosh@panasas.com> |
[SCSI] gdth: Remove gdth_ctr_tab[] - Places like Initialization and Reset that Just loop on all devices can use the link list with the list_for_each_entry macro. But the io_ctrl from user mode now suffers performance-wise because code has to do a sequential search for the requested host number. I have isolated this search in a gdth_find_ha(int hanum) member for future enhancement if needed. Signed-off-by Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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835cc24aff0fd4b9da9d0a45d9bd043adcb2cf89 |
|
02-Oct-2007 |
Christoph Hellwig <hch@lst.de> |
[SCSI] gdth: switch to modern scsi host registration - Use scsi_add_host and friends and track instances ourselves. And generally modernize the driver's structure. - TODO: Next we can remove the controller table - TODO: Fix use of deprecated pci_find_device() Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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10e1b4bc9238687a4b1311bd5b6769d6b8c704e6 |
|
02-Oct-2007 |
Boaz Harrosh <bharrosh@panasas.com> |
[SCSI] gdth: gdth_interrupt() gdth_get_status() & gdth_wait() fixes - gdth_get_status() returns a single device interrupt IStatus - gdth_interrupt split to __gdth_interrupt() that receives flags if is called from gdth_wait(). - Use dev_id passed from kernel and do not loop on all controllers. - gdth_wait(), get read of all global variables and call the new __gdth_interrupt with these variables on the stack Signed-off-by Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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45f1a41b2b2e02e91d29bde66a8da4d050959f65 |
|
02-Oct-2007 |
Boaz Harrosh <bharrosh@panasas.com> |
[SCSI] gdth: clean up host private data - Based on same patch from Christoph Hellwig <hch@lst.de> - Get rid of all the indirection in the Scsi_Host private data and always put the gdth_ha_str directly into it. - Change all internal functions prototype to recieve an "gdth_ha_str *ha" pointer directlly and kill all that redundent access to the "gdth_ctr_tab[]" controller-table. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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52759e6abc88fe007a080772ee01ef1154f96f30 |
|
02-Oct-2007 |
Christoph Hellwig <hch@lst.de> |
[SCSI] gdth: Remove virt hosts The virt_ctr option allows to register a new scsi_host for each bus on the raid controller. This non-default option makes no sense with the current scsi code and prevents cleaning up the host registration, so remove it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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69916b7ceac0dfbbc868ae5451062cb789b1b58a |
|
02-Oct-2007 |
Jeff Garzik <jeff@garzik.org> |
[SCSI] gdth: Reorder scsi_host_template intitializers shuffle scsi_host_template members such that they appear in the order in which they are defined in the header. this makes is easier to verify when initializers are missing members. Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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a52667f3cd84fa395e98b505967070b984fac4df |
|
02-Oct-2007 |
Jeff Garzik <jeff@garzik.org> |
[SCSI] gdth: kill gdth_{read,write}[bwl] wrappers They are direct equivalents to {read,write}[bwl]. Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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8d7a5da4fc95cb6210cd66e7c886161e10a1307f |
|
02-Oct-2007 |
Jeff Garzik <jeff@garzik.org> |
[SCSI] gdth: Remove 2.4.x support, in-kernel changelog * Remove in-source changelog. It's archived permanently in git and various kernel archives, and changelogs should exist purely in git. * Remove 2.4.x kernel support. It is an active obstacle to modernizing this driver, at this point. This includes killing gdth_kcompat.h which is 100% redundant in modern kernels. Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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8514ef27ee462747454f26a77982f670d9c3c391 |
|
02-Oct-2007 |
Christoph Hellwig <hch@lst.de> |
[SCSI] gdth: split out pci probing Split out per-device pci probing and put it under proper CONFIG_PCI. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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706a5d456762e77e199903e55377a9c00814c007 |
|
02-Oct-2007 |
Christoph Hellwig <hch@lst.de> |
[SCSI] gdth: split out eisa probing Split eisa probing into it's own helper, and do proper error unwinding. Protect EISA probind by the proper CONFIG_EISA symbol. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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aed91cb520747d08dd5cb0220d0dd3492bead220 |
|
02-Oct-2007 |
Christoph Hellwig <hch@lst.de> |
[SCSI] gdth: split out isa probing (note: this is ontop of Jeff's pci cleanup patch) Split out isa probing into a helper of it's own. Error handling is cleaned up, but errors are not propagated yet. Also enclose the isa probe under the proper CONFIG_ISA symbol instead of the !IA64 hack. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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b8bff2aeafb1959de27bd889d1c103577b36712f |
|
02-Oct-2007 |
Matthew Wilcox <willy@linux.intel.com> |
gdth: Make one abuse of scsi_cmnd less obvious Rather than having internal commands abuse scsi_done to call gdth_scsi_done, have all the places that use to call scsi_done directly call gdth_scsi_done, which now checks whether the command was internal, and calls scsi_done if not. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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687d2bc4877081a44c41b5b312e012cc69edda53 |
|
25-Sep-2007 |
Matthew Wilcox <matthew@wil.cx> |
[SCSI] gdth: Stop abusing ->done for internal commands The ->done member was being used to mark commands as being internal. I decided to put a magic number in ->underflow instead. I believe this to be safe as no current user of ->underflow has any of the bottom 9 bits set. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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bbfbbbc1182f8b44c8cc4c99f4a3f3a512149022 |
|
11-Aug-2007 |
Mariusz Kozlowski <m.kozlowski@tuxland.pl> |
[SCSI] kmalloc + memset conversion to kzalloc In NCR_D700, a4000t, aic7xxx_old, bvme6000, dpt_i2o, gdth, lpfc, megaraid, mvme16x osst, pluto, qla2xxx, zorro7xx Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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8e9a8a0d56c5d9d87adbefbbc8c8728c529fd95a |
|
17-Jul-2007 |
Jeff Garzik <jeff@garzik.org> |
[SCSI] gdth: remove redundant PCI stuff This patch * removes struct members that duplicate pci_dev members * replaces ha->stype usage with ha->pdev->device usage where feasible Signed-off-by: Jeff Garzik <jeff@garzik.org> Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Achim Leubner <Achim_Leubner@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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7a960b76ed1878a208e8bc68fe436b40aaff3ab5 |
|
23-May-2007 |
Robert P. J. Day <rpjday@mindspring.com> |
[SCSI] gdth: Fix obvious typo "spin_lock_irqrestore()" Fix misspelled "spin_lock_irqrestore" to read "spin_unlock_irqrestore" instead. Presumably, GDTH_RTC doesn't get used a lot. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Acked-by: Achim Leubner <achim_leubner@adaptec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
6c4b7e4fdf702136891f802bdf7ad52076594721 |
|
23-May-2007 |
David Rientjes <rientjes@google.com> |
[SCSI] gdth: fix ambiguous gdthtable definition Labeling a variable as __attribute_used__ is ambiguous: it means __attribute__((unused)) for gcc <3.4 and __attribute__((used)) for gcc >=3.4. There is no such thing as labeling a variable as __attribute__((used)). We assume that we're simply suppressing a warning here if gdthtable[] is declared but unreferenced. Acked-by: Achim Leubner <achim_leubner@adaptec.com> Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
bb9ba31ca3b88fd396e38950d1caedf2f83521c6 |
|
06-Mar-2007 |
Joerg Dorchain <joerg@dorchain.net> |
[SCSI] gdth: fix oops in gdth_copy_cmd() Recent alterations to the gdth_fill_raw_cmd() path no longer set the sg_ranz field for zero transfer commands. However, this field is used lower down in the function to initialise ha->cmd_len to the size of the firmware packet. If this uninitialised field contains a bogus value, ha->cmd_len can become much larger than the actual firmware packet and end up oopsing in gdth_copy_cmd() as it tries to copy this huge packet to the device (usually because it runs into an unallocated page). The fix is to initialise the sg_ranz field to zero at the start of gdth_fill_raw_cmd(). Signed-off-by: Joerg Dorchain <joerg@dorchain.net> Acked-by: "Leubner, Achim" <Achim_Leubner@adaptec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
cd354f1ae75e6466a7e31b727faede57a1f89ca5 |
|
14-Feb-2007 |
Tim Schmielau <tim@physik3.uni-rostock.de> |
[PATCH] remove many unneeded #includes of sched.h After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
00977a59b951207d38380c75f03a36829950265c |
|
12-Feb-2007 |
Arjan van de Ven <arjan@linux.intel.com> |
[PATCH] mark struct file_operations const 6 Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
107e716b3487df5e2940ebe3338d935306efc78b |
|
09-Nov-2006 |
Jean Delvare <khali@linux-fr.org> |
[SCSI] gdth: Fix && typos Fix uses of "&&" where "&" was obviously intended instead. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
7d12e780e003f93433d49ce78cfedf4b4c52adc5 |
|
05-Oct-2006 |
David Howells <dhowells@redhat.com> |
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
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6e9a4738c9fadb7cbdcabc1e3b415159f3741ed9 |
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01-Oct-2006 |
Peter Zijlstra <a.p.zijlstra@chello.nl> |
[PATCH] completions: lockdep annotate on stack completions All on stack DECLARE_COMPLETIONs should be replaced by: DECLARE_COMPLETION_ONSTACK Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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1d6f359a2e06296418481239f8054a878f36e819 |
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02-Jul-2006 |
Thomas Gleixner <tglx@linutronix.de> |
[PATCH] irq-flags: scsi: Use the new IRQF_ constants Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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beb40487508290f5d6565598c60a3f44261beef2 |
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10-Jun-2006 |
Christoph Hellwig <hch@lst.de> |
[SCSI] remove scsi_request infrastructure With Achim patch the last user (gdth) is switched away from scsi_request so we an kill it now. Also disables some code in i2o_scsi that was broken since the sg driver stopped using scsi_requests. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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6391a11375de5e2bb1eb8481e54619761dc65d9f |
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09-Jun-2006 |
Tobias Klauser <tklauser@nuerscht.ch> |
[SCSI] drivers/scsi: Use ARRAY_SIZE macro Use ARRAY_SIZE macro instead of sizeof(x)/sizeof(x[0]) and remove duplicates of the macro. Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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cbd5f69b98bb5d7a0d207230bcf8fa51fca3f3cf |
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09-Jun-2006 |
Leubner, Achim <Achim_Leubner@adaptec.com> |
[SCSI] remove the scsi_request interface from the gdth driver Initial pass at converting the gdth driver away from the scsi_request interface so that the request interface can be removed post 2.6.18 without breaking gdth. Based on changes from Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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5d5ff44fe6775ccb922fd1f7d478b2ba9ca95068 |
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03-Jun-2006 |
Christoph Hellwig <hch@lst.de> |
[SCSI] fix up request buffer reference in various scsi drivers Various scsi drivers use scsi_cmnd.buffer and scsi_cmnd.bufflen in their queuecommand functions. Those fields are internal storage for the midlayer only and are used to restore the original payload after request_buffer and request_bufflen have been overwritten for EH. Using the buffer and bufflen fields means they do very broken things in error handling. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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910638ae7ed4be27d6af55f6c9b5bf54b838e78b |
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28-Mar-2006 |
Matthias Gehre <M.Gehre@gmx.de> |
[PATCH] Replace 0xff.. with correct DMA_xBIT_MASK Replace all occurences of 0xff.. in calls to function pci_set_dma_mask() and pci_set_consistant_dma_mask() with the corresponding DMA_xBIT_MASK from linux/dma-mapping.h. Signed-off-by: Matthias Gehre <M.Gehre@gmx.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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e041c683412d5bf44dc2b109053e3b837b71742d |
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27-Mar-2006 |
Alan Stern <stern@rowland.harvard.edu> |
[PATCH] Notifier chain update: API changes The kernel's implementation of notifier chains is unsafe. There is no protection against entries being added to or removed from a chain while the chain is in use. The issues were discussed in this thread: http://marc.theaimsgroup.com/?l=linux-kernel&m=113018709002036&w=2 We noticed that notifier chains in the kernel fall into two basic usage classes: "Blocking" chains are always called from a process context and the callout routines are allowed to sleep; "Atomic" chains can be called from an atomic context and the callout routines are not allowed to sleep. We decided to codify this distinction and make it part of the API. Therefore this set of patches introduces three new, parallel APIs: one for blocking notifiers, one for atomic notifiers, and one for "raw" notifiers (which is really just the old API under a new name). New kinds of data structures are used for the heads of the chains, and new routines are defined for registration, unregistration, and calling a chain. The three APIs are explained in include/linux/notifier.h and their implementation is in kernel/sys.c. With atomic and blocking chains, the implementation guarantees that the chain links will not be corrupted and that chain callers will not get messed up by entries being added or removed. For raw chains the implementation provides no guarantees at all; users of this API must provide their own protections. (The idea was that situations may come up where the assumptions of the atomic and blocking APIs are not appropriate, so it should be possible for users to handle these things in their own way.) There are some limitations, which should not be too hard to live with. For atomic/blocking chains, registration and unregistration must always be done in a process context since the chain is protected by a mutex/rwsem. Also, a callout routine for a non-raw chain must not try to register or unregister entries on its own chain. (This did happen in a couple of places and the code had to be changed to avoid it.) Since atomic chains may be called from within an NMI handler, they cannot use spinlocks for synchronization. Instead we use RCU. The overhead falls almost entirely in the unregister routine, which is okay since unregistration is much less frequent that calling a chain. Here is the list of chains that we adjusted and their classifications. None of them use the raw API, so for the moment it is only a placeholder. ATOMIC CHAINS ------------- arch/i386/kernel/traps.c: i386die_chain arch/ia64/kernel/traps.c: ia64die_chain arch/powerpc/kernel/traps.c: powerpc_die_chain arch/sparc64/kernel/traps.c: sparc64die_chain arch/x86_64/kernel/traps.c: die_chain drivers/char/ipmi/ipmi_si_intf.c: xaction_notifier_list kernel/panic.c: panic_notifier_list kernel/profile.c: task_free_notifier net/bluetooth/hci_core.c: hci_notifier net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_chain net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_expect_chain net/ipv6/addrconf.c: inet6addr_chain net/netfilter/nf_conntrack_core.c: nf_conntrack_chain net/netfilter/nf_conntrack_core.c: nf_conntrack_expect_chain net/netlink/af_netlink.c: netlink_chain BLOCKING CHAINS --------------- arch/powerpc/platforms/pseries/reconfig.c: pSeries_reconfig_chain arch/s390/kernel/process.c: idle_chain arch/x86_64/kernel/process.c idle_notifier drivers/base/memory.c: memory_chain drivers/cpufreq/cpufreq.c cpufreq_policy_notifier_list drivers/cpufreq/cpufreq.c cpufreq_transition_notifier_list drivers/macintosh/adb.c: adb_client_list drivers/macintosh/via-pmu.c sleep_notifier_list drivers/macintosh/via-pmu68k.c sleep_notifier_list drivers/macintosh/windfarm_core.c wf_client_list drivers/usb/core/notify.c usb_notifier_list drivers/video/fbmem.c fb_notifier_list kernel/cpu.c cpu_chain kernel/module.c module_notify_list kernel/profile.c munmap_notifier kernel/profile.c task_exit_notifier kernel/sys.c reboot_notifier_list net/core/dev.c netdev_chain net/decnet/dn_dev.c: dnaddr_chain net/ipv4/devinet.c: inetaddr_chain It's possible that some of these classifications are wrong. If they are, please let us know or submit a patch to fix them. Note that any chain that gets called very frequently should be atomic, because the rwsem read-locking used for blocking chains is very likely to incur cache misses on SMP systems. (However, if the chain's callout routines may sleep then the chain cannot be atomic.) The patch set was written by Alan Stern and Chandra Seetharaman, incorporating material written by Keith Owens and suggestions from Paul McKenney and Andrew Morton. [jes@sgi.com: restructure the notifier chain initialization macros] Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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40cdc840dc337cb17d81bcf028b40834e78c1038 |
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05-Feb-2006 |
Jenx Axboe <axboe@suse.de> |
[SCSI] gdth: don't map zero-length requests Don't map zero-length requests in gdth, zome architectures don't like that in their dma mapping routines. [ I'm pretty sure Jens posted this before, but for some reason it got forgotten --hch ] Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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575c96871832e91983248aebb02fc072e5fd17c9 |
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15-Jan-2006 |
Adrian Bunk <bunk@stusta.de> |
spelling: s/appropiate/appropriate/ Signed-off-by: Adrian Bunk <bunk@stusta.de>
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f64a181d898e0518d5ae90c4870069510de977e1 |
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31-Oct-2005 |
Christoph Hellwig <hch@lst.de> |
[SCSI] remove Scsi_Device typedef Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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d0be4a7d29ad0bd3ce2209dd9e46d410b632db59 |
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31-Oct-2005 |
Christoph Hellwig <hch@lst.de> |
[SCSI] remove Scsi_Host_Template typedef Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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12413197eef2a29e0b9fb0fa541f5cbaeb1d3f3f |
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11-Jun-2005 |
Christoph Hellwig <hch@lst.de> |
[SCSI] remove scsi_set_device scsi_add_host is the proper place to set the device, but people copy the scsi_set_device usage from older drivers again and again. note that this leaves some legacy drivers like qlogicisp/qlogicfc without pci association in sysfs, but they're scheduled to go away soon anyway. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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3471c288036bf0835a82d0b1bbce2002f6e68390 |
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28-May-2005 |
Jeff Garzik <jgarzik@pobox.com> |
[SCSI] Remove no-op implementations of SCSI EH hooks Drivers need not implement a hook that returns FAILED, and does nothing else, since the SCSI midlayer code will do that for us. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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8e8790415e91964096f862a58cacb55d2bc9a817 |
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17-Apr-2005 |
<bunk@stusta.de> |
[PATCH] drivers/scsi/gdth.c: cleanups This patch contains the following cleanups: - make some needlessly global functions static - remove one more kernel 2.2 #ifdef Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
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17-Apr-2005 |
Linus Torvalds <torvalds@ppc970.osdl.org> |
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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