| 0c8d32c27f5cf6e14ca14b4758d1e994eebd50fd |
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18-Apr-2012 |
Lin Ming <ming.m.lin@intel.com> |
libata: forbid port runtime pm by default, fixing regression
Forbid port runtime pm by default because it has known hotplug issue.
User can allow it by, for example
echo auto > /sys/devices/pci0000:00/0000:00:1f.2/ata2/power/control
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
/drivers/ata/libata-transport.c
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| 966f1212e1ac5fe3ddf04479d21488ddb36a2608 |
|
16-Jan-2012 |
Lin Ming <ming.m.lin@intel.com> |
[libata] enable ata port async suspend
This saves devices suspend/resume time.
Tested system suspend/resume with SATA IDE/AHCI mode 3 times.
Below is the time took for devices suspend/resume.
SATA mode vanilla-kernel patched-kernel
--------- --------------------- ---------------------
IDE suspend: 0.744 suspend: 0.432
(0.716, 0.768, 0.748) (0.440, 0.428, 0.428)
resume: 5.084 resume: 2.209
(5.100, 5.064, 5.088) (2.168, 2.232, 2.228)
AHCI: suspend: 0.725 suspend: 0.449
(0.740, 0.708, 0.728) (0.456, 0.448, 0.444)
resume: 2.556 resume: 1.896
(2.604, 2.492, 2.572) (1.932, 1.872, 1.884)
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
/drivers/ata/libata-transport.c
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| 9ee4f3933930abf5cc34f8e9d69fe0e08c18f602 |
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05-Dec-2011 |
Lin Ming <ming.m.lin@intel.com> |
ata: add ata port runtime PM callbacks
Add ata port runtime suspend/resume/idle callbacks.
Set ->eh_noresume to skip the runtime PM calls on scsi host
in the error handler to avoid dead lock.
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
/drivers/ata/libata-transport.c
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| 5ef41082912bdfcb33fa53b8dba2ad17dea2ef90 |
|
05-Dec-2011 |
Lin Ming <ming.m.lin@intel.com> |
ata: add ata port system PM callbacks
Change ata_host_request_pm to ata_port_request_pm which performs
port suspend/resume.
Add ata port type driver which implements port PM callbacks.
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
/drivers/ata/libata-transport.c
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| 6a2148c6dc68cd221397a0b9d44ddb89802e5cc0 |
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19-Aug-2010 |
Jeff Garzik <jeff@garzik.org> |
drivers/ata/libata-transport.c: include linux/slab.h
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
/drivers/ata/libata-transport.c
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| d9027470b88631d0956ac37cdadfdeb9cdcf2c99 |
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25-May-2010 |
Gwendal Grignou <gwendal@google.com> |
[libata] Add ATA transport class
This is a scheleton for libata transport class.
All information is read only, exporting information from libata:
- ata_port class: one per ATA port
- ata_link class: one per ATA port or 15 for SATA Port Multiplier
- ata_device class: up to 2 for PATA link, usually one for SATA.
Signed-off-by: Gwendal Grignou <gwendal@google.com>
Reviewed-by: Grant Grundler <grundler@google.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
/drivers/ata/libata-transport.c
|