From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934141AbXCVRRH (ORCPT ); Thu, 22 Mar 2007 13:17:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S934136AbXCVRRG (ORCPT ); Thu, 22 Mar 2007 13:17:06 -0400 Received: from mail.suse.de ([195.135.220.2]:45448 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934141AbXCVRRF (ORCPT ); Thu, 22 Mar 2007 13:17:05 -0400 Date: Thu, 22 Mar 2007 18:17:03 +0100 From: Bernhard Walle To: linux-scsi@vger.kernel.org Cc: linux-kernel@vger.kernel.org Subject: [PATCH] Use unchecked_isa_dma in sd_revalidate_disk() Message-ID: <20070322171703.GA22470@strauss.suse.de> Mail-Followup-To: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org In sd_revalidate_disk(), the SCSI Disk driver needs a few bytes DMA memory, allocated by kmalloc() and __GFP_DMA. This patch uses __GFP_DMA only if the corresponding host structure has unchecked_isa_dma set. Signed-off-by: Bernhard Walle --- drivers/scsi/sd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) Index: linux-2.6.21-rc4/drivers/scsi/sd.c =================================================================== --- linux-2.6.21-rc4.orig/drivers/scsi/sd.c +++ linux-2.6.21-rc4/drivers/scsi/sd.c @@ -1553,7 +1553,8 @@ static int sd_revalidate_disk(struct gen if (!scsi_device_online(sdp)) goto out; - buffer = kmalloc(SD_BUF_SIZE, GFP_KERNEL | __GFP_DMA); + buffer = kmalloc(SD_BUF_SIZE, GFP_KERNEL | + (sdp->host->unchecked_isa_dma ? __GFP_DMA : 0)); if (!buffer) { printk(KERN_WARNING "(sd_revalidate_disk:) Memory allocation " "failure.\n");