From patchwork Tue Oct 27 13:50:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 313040 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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 1A771C5DF9D for ; Tue, 27 Oct 2020 14:11:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D3B5B218AC for ; Tue, 27 Oct 2020 14:11:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603807871; bh=y0nrALnpN+wNQd4dB09u9lMUX8CA2OB73naCORAG4Ok=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=GzX9raGkDkDlYCCFqLFmO2UZBoJE4NCzTdfS245e7YtjdMQ9wF8XUeYAKmT/W/xSd Lt/2JfOLeYujtRrhj26d1nbDFpPBU79qggD0oPiVh2thuv2thRNvSn75cjIpZPWZIn EOQ3r8jPX/60oRY3eWKxgAHjE11QidIOPzYNWJ6A= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754671AbgJ0OG1 (ORCPT ); Tue, 27 Oct 2020 10:06:27 -0400 Received: from mail.kernel.org ([198.145.29.99]:54840 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754661AbgJ0OG0 (ORCPT ); Tue, 27 Oct 2020 10:06:26 -0400 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7F9052222C; Tue, 27 Oct 2020 14:06:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603807586; bh=y0nrALnpN+wNQd4dB09u9lMUX8CA2OB73naCORAG4Ok=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TnG6dOSMUc2dNt3SPP4sPwp1ic3qcJmGIurQlFnonYczZEbDsFlPh2VZw38sHzGDO 8pVs8GcxkbZJJ2Hp2+JAwsVQCDkotf5FG2XhxS3NBHpo5HGujvf0BKZY083Z9LBfHK qUYRSTyKc+piHAk9lLOIt45En+9AaW1zQ3oxzqJI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 4.9 107/139] media: saa7134: avoid a shift overflow Date: Tue, 27 Oct 2020 14:50:01 +0100 Message-Id: <20201027134907.217650676@linuxfoundation.org> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201027134902.130312227@linuxfoundation.org> References: <20201027134902.130312227@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Mauro Carvalho Chehab [ Upstream commit 15a36aae1ec1c1f17149b6113b92631791830740 ] As reported by smatch: drivers/media/pci/saa7134//saa7134-tvaudio.c:686 saa_dsp_writel() warn: should 'reg << 2' be a 64 bit type? On a 64-bits Kernel, the shift might be bigger than 32 bits. In real, this should never happen, but let's shut up the warning. Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/pci/saa7134/saa7134-tvaudio.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/media/pci/saa7134/saa7134-tvaudio.c b/drivers/media/pci/saa7134/saa7134-tvaudio.c index 38f94b742e283..0b5d6f4994571 100644 --- a/drivers/media/pci/saa7134/saa7134-tvaudio.c +++ b/drivers/media/pci/saa7134/saa7134-tvaudio.c @@ -697,7 +697,8 @@ int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value) { int err; - audio_dbg(2, "dsp write reg 0x%x = 0x%06x\n", reg << 2, value); + audio_dbg(2, "dsp write reg 0x%x = 0x%06x\n", + (reg << 2) & 0xffffffff, value); err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR); if (err < 0) return err;