From patchwork Mon Nov 30 13:45:31 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Ujfalusi X-Patchwork-Id: 7725291 Return-Path: X-Original-To: patchwork-linux-spi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id BC11F9F1C0 for ; Mon, 30 Nov 2015 13:51:07 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EAB5220562 for ; Mon, 30 Nov 2015 13:51:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BD45B20552 for ; Mon, 30 Nov 2015 13:51:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754163AbbK3NqZ (ORCPT ); Mon, 30 Nov 2015 08:46:25 -0500 Received: from comal.ext.ti.com ([198.47.26.152]:46560 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754061AbbK3NqW (ORCPT ); Mon, 30 Nov 2015 08:46:22 -0500 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id tAUDjtI0014154; Mon, 30 Nov 2015 07:45:55 -0600 Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id tAUDjtj4000378; Mon, 30 Nov 2015 07:45:55 -0600 Received: from dflp33.itg.ti.com (10.64.6.16) by DFLE73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.3.224.2; Mon, 30 Nov 2015 07:45:55 -0600 Received: from dlep33.itg.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp33.itg.ti.com (8.14.3/8.13.8) with ESMTP id tAUDjmOD024941; Mon, 30 Nov 2015 07:45:52 -0600 From: Peter Ujfalusi To: , , CC: , , , , , , Subject: [RFC v02 01/15] dmaengine: core: Allow NULL mask pointer in __dma_device_satisfies_mask() Date: Mon, 30 Nov 2015 15:45:31 +0200 Message-ID: <1448891145-10766-2-git-send-email-peter.ujfalusi@ti.com> X-Mailer: git-send-email 2.6.3 In-Reply-To: <1448891145-10766-1-git-send-email-peter.ujfalusi@ti.com> References: <1448891145-10766-1-git-send-email-peter.ujfalusi@ti.com> MIME-Version: 1.0 Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Treat as true condition the case when the mask is NULL. Signed-off-by: Peter Ujfalusi --- drivers/dma/dmaengine.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c index daf54a39bcc7..52c3eee48e2e 100644 --- a/drivers/dma/dmaengine.c +++ b/drivers/dma/dmaengine.c @@ -184,6 +184,9 @@ __dma_device_satisfies_mask(struct dma_device *device, { dma_cap_mask_t has; + if (!want) + return true; + bitmap_and(has.bits, want->bits, device->cap_mask.bits, DMA_TX_TYPE_END); return bitmap_equal(want->bits, has.bits, DMA_TX_TYPE_END);