15 May, 2013
1 commit
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While registering host controller track port number based upon number
of ports available on the controller, export port_no attribute through
/sys. This patch is needed by udev for composing persistent links in
/dev/disk/by-path./sys/devices/pci0000:00/0000:00:1f.2/ata8/ata_port/ata8
total 0
lrwxrwxrwx. 1 root root 0 Mar 6 12:43 device -> ../../../ata8
-r--r--r--. 1 root root 4096 Mar 6 12:43 idle_irq
-r--r--r--. 1 root root 4096 Mar 6 12:43 nr_pmp_links
-r--r--r--. 1 root root 4096 Mar 6 12:43 port_no
drwxr-xr-x. 2 root root 0 Mar 6 12:42 power
lrwxrwxrwx. 1 root root 0 Mar 6 12:41 subsystem -> ../../../../../../class/ata_port
-rw-r--r--. 1 root root 4096 Mar 6 12:40 uevent
1Signed-off-by: David Milburn
Signed-off-by: Tejun Heo
26 Jul, 2012
1 commit
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Functions not referenced outside of a source file should be marked
static to prevent it from being exposed globally.This quiets the sparse warnings:
warning: symbol 'ata_is_port' was not declared. Should it be static?
warning: symbol 'ata_is_link' was not declared. Should it be static?
warning: symbol 'ata_is_ata_dev' was not declared. Should it be static?Signed-off-by: H Hartley Sweeten
Signed-off-by: Jeff Garzik
19 Apr, 2012
1 commit
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Forbid port runtime pm by default because it has known hotplug issue.
User can allow it by, for exampleecho auto > /sys/devices/pci0000:00/0000:00:1f.2/ata2/power/control
Signed-off-by: Lin Ming
Signed-off-by: Jeff Garzik
18 Jan, 2012
1 commit
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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
Signed-off-by: Jeff Garzik
09 Jan, 2012
2 commits
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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
Signed-off-by: Lin Ming
Signed-off-by: Jeff Garzik -
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
Signed-off-by: Jeff Garzik
22 Oct, 2010
2 commits
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Signed-off-by: Jeff Garzik
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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
Reviewed-by: Grant Grundler
Signed-off-by: Jeff Garzik
