From: "Stephen M. Cameron" <scameron@beardog.cce.hp.com>
To: james.bottomley@hansenpartnership.com
Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
stephenmcameron@gmail.com, thenzl@redhat.com,
akpm@linux-foundation.org, mikem@beardog.cce.hp.com
Subject: [PATCH] hpsa: do not attempt to read from a write-only register
Date: Fri, 08 Jul 2011 14:59:26 -0500 [thread overview]
Message-ID: <20110708195926.3623.30375.stgit@beardog.cce.hp.com> (raw)
From: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Most smartarrays tolerate it, but a few new ones don't.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
---
drivers/scsi/hpsa.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h
index 6d8dcd4..7f53cea 100644
--- a/drivers/scsi/hpsa.h
+++ b/drivers/scsi/hpsa.h
@@ -214,7 +214,7 @@ static void SA5_submit_command(struct ctlr_info *h,
dev_dbg(&h->pdev->dev, "Sending %x, tag = %x\n", c->busaddr,
c->Header.Tag.lower);
writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
- (void) readl(h->vaddr + SA5_REQUEST_PORT_OFFSET);
+ (void) readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
h->commands_outstanding++;
if (h->commands_outstanding > h->max_outstanding)
h->max_outstanding = h->commands_outstanding;
next reply other threads:[~2011-07-08 19:59 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-08 19:59 Stephen M. Cameron [this message]
2011-07-11 20:19 ` [PATCH] hpsa: do not attempt to read from a write-only register Andrew Morton
2011-07-11 20:51 ` scameron
2011-07-11 21:04 ` Andrew Morton
2011-07-11 21:08 ` scameron
-- strict thread matches above, loose matches on Subject: below --
2011-07-21 18:16 Stephen M. Cameron
2011-07-21 18:17 ` Stephen Cameron
2011-07-22 22:39 ` Andrew Morton
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