+ hpsa-do-not-attempt-to-read-from-a-write-only-register.patch added to -mm tree

+ hpsa-do-not-attempt-to-read-from-a-write-only-register.patch added to -mm tree

[akpm]

The patch titled
     hpsa: do not attempt to read from a write-only register
has been added to the -mm tree.  Its filename is
     hpsa-do-not-attempt-to-read-from-a-write-only-register.patch

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*** Remember to use Documentation/SubmitChecklist when testing your code ***

See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this

The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/

------------------------------------------------------
Subject: hpsa: do not attempt to read from a write-only register
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>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/scsi/hpsa.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN drivers/scsi/hpsa.h~hpsa-do-not-attempt-to-read-from-a-write-only-register drivers/scsi/hpsa.h
--- a/drivers/scsi/hpsa.h~hpsa-do-not-attempt-to-read-from-a-write-only-register
+++ a/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 -mm which might be from scameron@beardog.cce.hp.com are

hpsa-do-not-attempt-to-read-from-a-write-only-register.patch