From: "Stephen M. Cameron" <scameron@beardog.cce.hp.com>
To: axboe@kernel.dk
Cc: stephenmcameron@gmail.com, akpm@linux-foundation.org,
mikem@beardog.cce.hp.com, linux-kernel@vger.kernel.org,
thenzl@redhat.com
Subject: [PATCH] cciss: do not attempt to read from a write-only register
Date: Fri, 08 Jul 2011 14:58:53 -0500 [thread overview]
Message-ID: <20110708195853.3594.38970.stgit@beardog.cce.hp.com> (raw)
From: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Most smartarrays will tolerate it, but some new ones don't.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
---
drivers/block/cciss.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h
index 16b4d58..c049548 100644
--- a/drivers/block/cciss.h
+++ b/drivers/block/cciss.h
@@ -223,7 +223,7 @@ static void SA5_submit_command( ctlr_info_t *h, CommandList_struct *c)
h->ctlr, c->busaddr);
#endif /* CCISS_DEBUG */
writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
- readl(h->vaddr + SA5_REQUEST_PORT_OFFSET);
+ 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 19:58 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-08 19:58 Stephen M. Cameron [this message]
2011-07-09 7:02 ` [PATCH] cciss: do not attempt to read from a write-only register Jens Axboe
-- 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
2011-07-23 11:46 ` Jens Axboe
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