Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fd995f7039f1955ccc6b43e1e2d168060b31e4b2
Commit: fd995f7039f1955ccc6b43e1e2d168060b31e4b2
Parent: ae791c05694d7391ee9261a0450a50f7e95aedfd
Author: Tejun Heo <[EMAIL PROTECTED]>
AuthorDate: Sun Sep 23 13:14:12 2007 +0900
Committer: Jeff Garzik <[EMAIL PROTECTED]>
CommitDate: Fri Oct 12 14:55:41 2007 -0400
libata-pmp-prep: implement ATA_LFLAG_NO_RETRY
Some PMP links are connected to internal pseudo devices which may come
and go depending on situation. There's no reason to try hard to
recover them. ATA_LFLAG_NO_RETRY tells EH to not retry if the device
attached to the link fails.
Signed-off-by: Tejun Heo <[EMAIL PROTECTED]>
Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]>
---
drivers/ata/libata-eh.c | 5 ++++-
include/linux/libata.h | 1 +
2 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index 7be04bd..8f8ed4d 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -2335,7 +2335,10 @@ int ata_eh_recover(struct ata_port *ap,
ata_prereset_fn_t prereset,
struct ata_eh_context *ehc = &link->eh_context;
ata_link_for_each_dev(dev, link) {
- ehc->tries[dev->devno] = ATA_EH_DEV_TRIES;
+ if (link->flags & ATA_LFLAG_NO_RETRY)
+ ehc->tries[dev->devno] = 1;
+ else
+ ehc->tries[dev->devno] = ATA_EH_DEV_TRIES;
/* collect port action mask recorded in dev actions */
ehc->i.action |= ehc->i.dev_action[dev->devno] &
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 6266fff..adeee73 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -169,6 +169,7 @@ enum {
ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */
ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */
ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB,
+ ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */
/* struct ata_port flags */
ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */
-
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