diff options
author | Tejun Heo <htejun@gmail.com> | 2007-09-23 00:14:13 -0400 |
---|---|---|
committer | Jeff Garzik <jeff@garzik.org> | 2007-10-12 14:55:41 -0400 |
commit | e31e8531d668c9c4dc7883054788f89805188003 (patch) | |
tree | 9c3762792344d24c996d6459409456664a2e381b /drivers/ata | |
parent | 668108d73bbb1ae85f01db38d6be822fd28ece1f (diff) |
libata-pmp-prep: implement ATA_HORKAGE_SKIP_PM
Some pseudo devices fail PM commands unnecessarily aborting system
suspend. Implement ATA_HORKAGE_SKIP_PM which makes libata skip PM
commands for these devices.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata')
-rw-r--r-- | drivers/ata/libata-scsi.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 8ca2caeed017..451f79c6fbac 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c | |||
@@ -944,6 +944,13 @@ static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc) | |||
944 | goto invalid_fld; /* LOEJ bit set not supported */ | 944 | goto invalid_fld; /* LOEJ bit set not supported */ |
945 | if (((cdb[4] >> 4) & 0xf) != 0) | 945 | if (((cdb[4] >> 4) & 0xf) != 0) |
946 | goto invalid_fld; /* power conditions not supported */ | 946 | goto invalid_fld; /* power conditions not supported */ |
947 | |||
948 | if (qc->dev->horkage & ATA_HORKAGE_SKIP_PM) { | ||
949 | /* the device lacks PM support, finish without doing anything */ | ||
950 | scmd->result = SAM_STAT_GOOD; | ||
951 | return 1; | ||
952 | } | ||
953 | |||
947 | if (cdb[4] & 0x1) { | 954 | if (cdb[4] & 0x1) { |
948 | tf->nsect = 1; /* 1 sector, lba=0 */ | 955 | tf->nsect = 1; /* 1 sector, lba=0 */ |
949 | 956 | ||