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[PATCH] Suspend support for libata

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This patch adds suspend patch to libata, and ata_piix in particular. For
most low level drivers, they should just need to add the 4 hooks to
work. As I can only test ata_piix, I didn't enable it for more
though.

Suspend support is the single most important feature on a notebook, and
most new notebooks have sata drives. It's quite embarrassing that we
_still_ do not support this. Right now, it's perfectly possible to
suspend the drive in mid-transfer.

Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jens Axboe 2006-01-06 09:28:07 +01:00 • committed by Linus Torvalds
parent 88202a0c84
commit 9b84754866
7 changed files with 181 additions and 0 deletions
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2
include/linux/ata.h
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@ -141,6 +141,8 @@ enum {
ATA_CMD_PACKET = 0xA0,
ATA_CMD_VERIFY = 0x40,
ATA_CMD_VERIFY_EXT = 0x42,
ATA_CMD_STANDBYNOW1 = 0xE0,
ATA_CMD_IDLEIMMEDIATE = 0xE1,
ATA_CMD_INIT_DEV_PARAMS = 0x91,
/* SETFEATURES stuff */