From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 53BC4C2BB3F for ; Wed, 15 Nov 2023 20:04:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344284AbjKOUEr (ORCPT ); Wed, 15 Nov 2023 15:04:47 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52266 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344301AbjKOUEr (ORCPT ); Wed, 15 Nov 2023 15:04:47 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B5CCAC2 for ; Wed, 15 Nov 2023 12:04:43 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 37A72C433C7; Wed, 15 Nov 2023 20:04:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1700078683; bh=Sa7m9NWCWOuUSlFb23HY/bbBZGeQpiDtMhkb3F2E0PA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AClKRLcyOvuIDSq2NcQ6Vt8vsHikBj9zq8L1fPcSjQqe0+ThUk/+Gm+IPPC4cJReD N1aly5LN+n6uQiMZmVVfqohBT3qupmsfOTOGP1xsxp//oyk9kxJUXS/Fk1haKsTayT gvb2sQz732HZo6r9CHRk9AraydwuPwOwF2FUOshc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dan Carpenter , Peter Ujfalusi , Vinod Koul , Sasha Levin Subject: [PATCH 4.14 27/45] dmaengine: ti: edma: handle irq_of_parse_and_map() errors Date: Wed, 15 Nov 2023 14:33:04 -0500 Message-ID: <20231115191421.216502411@linuxfoundation.org> X-Mailer: git-send-email 2.42.1 In-Reply-To: <20231115191419.641552204@linuxfoundation.org> References: <20231115191419.641552204@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dan Carpenter [ Upstream commit 14f6d317913f634920a640e9047aa2e66f5bdcb7 ] Zero is not a valid IRQ for in-kernel code and the irq_of_parse_and_map() function returns zero on error. So this check for valid IRQs should only accept values > 0. Fixes: 2b6b3b742019 ("ARM/dmaengine: edma: Merge the two drivers under drivers/dma/") Signed-off-by: Dan Carpenter Acked-by: Peter Ujfalusi Link: https://lore.kernel.org/r/f15cb6a7-8449-4f79-98b6-34072f04edbc@moroto.mountain Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- drivers/dma/edma.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index 57a49fe713fdc..84a61f0e98828 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -2298,7 +2298,7 @@ static int edma_probe(struct platform_device *pdev) if (irq < 0 && node) irq = irq_of_parse_and_map(node, 0); - if (irq >= 0) { + if (irq > 0) { irq_name = devm_kasprintf(dev, GFP_KERNEL, "%s_ccint", dev_name(dev)); ret = devm_request_irq(dev, irq, dma_irq_handler, 0, irq_name, @@ -2314,7 +2314,7 @@ static int edma_probe(struct platform_device *pdev) if (irq < 0 && node) irq = irq_of_parse_and_map(node, 2); - if (irq >= 0) { + if (irq > 0) { irq_name = devm_kasprintf(dev, GFP_KERNEL, "%s_ccerrint", dev_name(dev)); ret = devm_request_irq(dev, irq, dma_ccerr_handler, 0, irq_name, -- 2.42.0