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authorMark Lord <liml@rtr.ca>2006-05-28 11:28:00 -0400
committerChris Wright <chrisw@sous-sol.org>2006-06-05 10:18:14 -0700
commit17c384f205082ddfc1bf8bb3cfa63194b7aac5e7 (patch)
tree9d7d32e14d26bc27dc13610281313149bb9da34a
parent822dee3afa4f03fc3fa89e5d5794143a909c4e6f (diff)
[PATCH] the latest consensus libata resume fix
Okay, just to sum things up. This forces libata to wait for up to 2 seconds for BUSY|DRQ to clear on resume before continuing. [jgarzik adds...] During testing we never saw DRQ asserted, but nonetheless (a) this works and (b) testing for DRQ won't hurt. Signed-off-by: Mark Lord <liml@rtr.ca> Acked-by: Jens Axboe <axboe@suse.de> Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/scsi/libata-core.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 4f91b0dc572b..400e9d74ad58 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -4293,6 +4293,7 @@ static int ata_start_drive(struct ata_port *ap, struct ata_device *dev)
int ata_device_resume(struct ata_port *ap, struct ata_device *dev)
{
if (ap->flags & ATA_FLAG_SUSPENDED) {
+ ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 200000);
ap->flags &= ~ATA_FLAG_SUSPENDED;
ata_set_mode(ap);
}