From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bartlomiej Zolnierkiewicz Subject: [PATCH] icside: icside_dma_setup() fixes Date: Sun, 1 Feb 2009 20:12:23 +0100 Message-ID: <200902012012.23761.bzolnier@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from mu-out-0910.google.com ([209.85.134.185]:22397 "EHLO mu-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751571AbZBATPB (ORCPT ); Sun, 1 Feb 2009 14:15:01 -0500 Content-Disposition: inline Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: linux-ide@vger.kernel.org Cc: linux-kernel@vger.kernel.org Check for ide_build_sglist() return value and re-map sg table if necessary. Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/icside.c | 4 ++++ 1 file changed, 4 insertions(+) Index: b/drivers/ide/icside.c =================================================================== --- a/drivers/ide/icside.c +++ b/drivers/ide/icside.c @@ -326,6 +326,10 @@ static int icside_dma_setup(ide_drive_t BUG_ON(dma_channel_active(ec->dma)); hwif->sg_nents = ide_build_sglist(drive, rq); + if (hwif->sg_nents == 0) { + ide_map_sg(drive, rq); + return 1; + } /* * Ensure that we have the right interrupt routed.