Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e31e8531d668c9c4dc7883054788f89805188003
Commit: e31e8531d668c9c4dc7883054788f89805188003
Parent: 668108d73bbb1ae85f01db38d6be822fd28ece1f
Author: Tejun Heo <[EMAIL PROTECTED]>
AuthorDate: Sun Sep 23 13:14:13 2007 +0900
Committer: Jeff Garzik <[EMAIL PROTECTED]>
CommitDate: Fri Oct 12 14:55:41 2007 -0400
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 <[EMAIL PROTECTED]>
Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]>
---
drivers/ata/libata-scsi.c | 7 +++++++
include/linux/libata.h | 1 +
2 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 8ca2cae..451f79c 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)
goto invalid_fld; /* LOEJ bit set not supported */
if (((cdb[4] >> 4) & 0xf) != 0)
goto invalid_fld; /* power conditions not supported */
+
+ if (qc->dev->horkage & ATA_HORKAGE_SKIP_PM) {
+ /* the device lacks PM support, finish without doing anything */
+ scmd->result = SAM_STAT_GOOD;
+ return 1;
+ }
+
if (cdb[4] & 0x1) {
tf->nsect = 1; /* 1 sector, lba=0 */
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 2bd1d26..56b2187 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -329,6 +329,7 @@ enum {
ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */
+ ATA_HORKAGE_SKIP_PM = (1 << 5), /* Skip PM operations */
};
enum hsm_task_states {
-
To unsubscribe from this list: send the line "unsubscribe git-commits-head" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
