[PATCH] Suspend support for libata

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>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/ata.h b/include/linux/ata.h
index d2873b732bb1..3eb80c391b39 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -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 */