From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754947Ab1GHT7b (ORCPT ); Fri, 8 Jul 2011 15:59:31 -0400 Received: from g1t0027.austin.hp.com ([15.216.28.34]:10115 "EHLO g1t0027.austin.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754859Ab1GHT7a (ORCPT ); Fri, 8 Jul 2011 15:59:30 -0400 Subject: [PATCH] hpsa: do not attempt to read from a write-only register To: james.bottomley@hansenpartnership.com From: "Stephen M. Cameron" 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 Date: Fri, 08 Jul 2011 14:59:26 -0500 Message-ID: <20110708195926.3623.30375.stgit@beardog.cce.hp.com> User-Agent: StGit/0.15 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Stephen M. Cameron Most smartarrays tolerate it, but a few new ones don't. Signed-off-by: Stephen M. Cameron --- 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;