From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932148Ab1HCXmD (ORCPT ); Wed, 3 Aug 2011 19:42:03 -0400 Received: from cantor2.suse.de ([195.135.220.15]:33614 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932088Ab1HCX1W (ORCPT ); Wed, 3 Aug 2011 19:27:22 -0400 X-Mailbox-Line: From gregkh@clark.kroah.org Wed Aug 3 15:12:48 2011 Message-Id: <20110803221248.602480485@clark.kroah.org> User-Agent: quilt/0.48-16.4 Date: Wed, 03 Aug 2011 15:01:06 -0700 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: stable-review@kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, "Stephen M. Cameron" , James Bottomley Subject: [046/102] [SCSI] hpsa: do not attempt to read from a write-only register In-Reply-To: <20110803221345.GA10346@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.0-stable review patch. If anyone has any objections, please let us know. ------------------ From: "Stephen M. Cameron" 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 Signed-off-by: James Bottomley Signed-off-by: Greg Kroah-Hartman --- 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;