This is a note to let you know that I've just added the patch titled
[SCSI] hpsa: do not attempt to read from a write-only register
to the 3.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
hpsa-do-not-attempt-to-read-from-a-write-only.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From fec62c368b9c8b05d5124ca6c3b8336b537f26f3 Mon Sep 17 00:00:00 2001
From: "Stephen M. Cameron" <[email protected]>
Date: Thu, 21 Jul 2011 13:16:05 -0500
Subject: [SCSI] hpsa: do not attempt to read from a write-only register
From: "Stephen M. Cameron" <[email protected]>
commit fec62c368b9c8b05d5124ca6c3b8336b537f26f3 upstream.
Most smartarrays tolerate it, but a few new ones don't.
Without this change some newer Smart Arrays will lock up
and i/o will grind to a halt.
Signed-off-by: Stephen M. Cameron <[email protected]>
Signed-off-by: James Bottomley <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/scsi/hpsa.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/scsi/hpsa.h
+++ b/drivers/scsi/hpsa.h
@@ -214,7 +214,7 @@ static void SA5_submit_command(struct ct
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;
Patches currently in stable-queue which might be from
[email protected] are
queue-3.0/hpsa-do-not-attempt-to-read-from-a-write-only.patch
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