From: Tejun Heo <htejun@gmail.com>
To: jeff@garzik.org, alan@lxorguk.ukuu.org.uk, linux-ide@vger.kernel.org
Cc: Tejun Heo <htejun@gmail.com>
Subject: [PATCH 08/12] libata-pmp-prep: implement ATA_LFLAG_NO_RETRY
Date: Sun, 23 Sep 2007 13:14:12 +0900 [thread overview]
Message-ID: <11905208522521-git-send-email-htejun@gmail.com> (raw)
In-Reply-To: <11905208513747-git-send-email-htejun@gmail.com>
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 <htejun@gmail.com>
---
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 */
--
1.5.0.3
next prev parent reply other threads:[~2007-09-23 4:14 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-23 4:14 [PATCHSET 1/2] libata: prep for PMP support, take 6 Tejun Heo
2007-09-23 4:14 ` [PATCH 01/12] libata: misc updates for AN Tejun Heo
2007-09-26 2:27 ` Jeff Garzik
2007-09-23 4:14 ` [PATCH 05/12] libata-pmp-prep: implement ops->qc_defer() Tejun Heo
2007-09-23 4:14 ` [PATCH 07/12] libata-pmp-prep: implement ATA_LFLAG_NO_SRST, ASSUME_ATA and ASSUME_SEMB Tejun Heo
2007-09-23 4:14 ` [PATCH 06/12] libata-pmp-prep: implement qc_defer helpers Tejun Heo
2007-09-23 4:14 ` [PATCH 02/12] libata-pmp-prep: add PMP related constants, fields, ops and update helpers Tejun Heo
2007-09-23 4:14 ` [PATCH 03/12] libata-pmp-prep: add @new_class to ata_dev_revalidate() Tejun Heo
2007-09-23 4:14 ` Tejun Heo [this message]
2007-09-23 4:14 ` [PATCH 04/12] libata-pmp-prep: make a number of functions global to libata Tejun Heo
2007-09-23 4:14 ` [PATCH 12/12] libata-pmp-prep: implement sata_async_notification() Tejun Heo
2007-09-23 4:14 ` [PATCH 10/12] libata-pmp-prep: implement EH fast-fail path Tejun Heo
2007-09-23 4:14 ` [PATCH 11/12] libata-pmp-prep: implement ATA_HORKAGE_SKIP_PM Tejun Heo
2007-09-23 4:14 ` [PATCH 09/12] libata-pmp-prep: implement ATA_LFLAG_DISABLED Tejun Heo
-- strict thread matches above, loose matches on Subject: below --
2007-07-01 10:26 [PATCHSET 3/4] libata: prep for PMP support, take 4 Tejun Heo
2007-07-01 10:26 ` [PATCH 08/12] libata-pmp-prep: implement ATA_LFLAG_NO_RETRY Tejun Heo
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