From patchwork Wed May 12 14:49:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 436603 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 11126C41602 for ; Wed, 12 May 2021 16:28:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D3B5D613DF for ; Wed, 12 May 2021 16:28:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235524AbhELQ2T (ORCPT ); Wed, 12 May 2021 12:28:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:59070 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233312AbhELQS5 (ORCPT ); Wed, 12 May 2021 12:18:57 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id D0DB761D86; Wed, 12 May 2021 15:45:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620834335; bh=os3IdbjtmowGQlAp1NLTz3BkNBLLRVYjWB6eNY2ukH4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1563fn+dZM0OIdlv9VEvnQQXGADSo9tdEhERynAGOCMY74iFwWIVJKA6cyJF3lgQS N5I1yt8AAgKXx6q6QN8QmqNJNhfjHBp/1h7BuJ63Y75jz/nwh/ncR+FDBObLO3HY7v WYNiZuqklvkart1aRY/NDe8lbiD/rJEDrDtxAuKM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Sergey Shtylyov , Wolfram Sang , Sasha Levin Subject: [PATCH 5.11 503/601] i2c: sh7760: add IRQ check Date: Wed, 12 May 2021 16:49:40 +0200 Message-Id: <20210512144844.406174234@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210512144827.811958675@linuxfoundation.org> References: <20210512144827.811958675@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Sergey Shtylyov [ Upstream commit e5b2e3e742015dd2aa6bc7bcef2cb59b2de1221c ] The driver neglects to check the result of platform_get_irq()'s call and blithely passes the negative error codes to devm_request_irq() (which takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding an original error code. Stop calling devm_request_irq() with invalid IRQ #s. Fixes: a26c20b1fa6d ("i2c: Renesas SH7760 I2C master driver") Signed-off-by: Sergey Shtylyov Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin --- drivers/i2c/busses/i2c-sh7760.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-sh7760.c b/drivers/i2c/busses/i2c-sh7760.c index c2005c789d2b..c79c9f542c5a 100644 --- a/drivers/i2c/busses/i2c-sh7760.c +++ b/drivers/i2c/busses/i2c-sh7760.c @@ -471,7 +471,10 @@ static int sh7760_i2c_probe(struct platform_device *pdev) goto out2; } - id->irq = platform_get_irq(pdev, 0); + ret = platform_get_irq(pdev, 0); + if (ret < 0) + return ret; + id->irq = ret; id->adap.nr = pdev->id; id->adap.algo = &sh7760_i2c_algo;