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 0DA79EE3F05 for ; Mon, 11 Sep 2023 20:52:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237905AbjIKUvs (ORCPT ); Mon, 11 Sep 2023 16:51:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34008 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239729AbjIKO1S (ORCPT ); Mon, 11 Sep 2023 10:27:18 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BBB70F0 for ; Mon, 11 Sep 2023 07:27:13 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0DCCEC433C9; Mon, 11 Sep 2023 14:27:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1694442433; bh=eRdqXqFmmKFGD+olvgfvgrDgCNzKfOnISMdxxoPZ3U8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=i332aryOmr1Sg8hDYl0yxiudS7helSMUBD9kQoPIzPZ68YwgtwpvOCqOY1KXbxxcb FWV5+g3gRPzKn6cwrarsAcPgz8wxS/WrKVyQO68U/v3gxiJbvQ9rMZPxWSc75HOtGv 7Zu5HXIWpAP3Z4ea7lbDzqU+d1zByHvUG3Y78qMM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dmitry Antipov , Hans Verkuil , Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 6.4 007/737] media: pulse8-cec: handle possible ping error Date: Mon, 11 Sep 2023 15:37:46 +0200 Message-ID: <20230911134650.517897525@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230911134650.286315610@linuxfoundation.org> References: <20230911134650.286315610@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 6.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dmitry Antipov [ Upstream commit 92cbf865ea2e0f2997ff97815c6db182eb23df1b ] Handle (and warn about) possible error waiting for MSGCODE_PING result. Found by Linux Verification Center (linuxtesting.org) with SVACE. Signed-off-by: Dmitry Antipov Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/cec/usb/pulse8/pulse8-cec.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/media/cec/usb/pulse8/pulse8-cec.c b/drivers/media/cec/usb/pulse8/pulse8-cec.c index 04b13cdc38d2c..ba67587bd43ec 100644 --- a/drivers/media/cec/usb/pulse8/pulse8-cec.c +++ b/drivers/media/cec/usb/pulse8/pulse8-cec.c @@ -809,8 +809,11 @@ static void pulse8_ping_eeprom_work_handler(struct work_struct *work) mutex_lock(&pulse8->lock); cmd = MSGCODE_PING; - pulse8_send_and_wait(pulse8, &cmd, 1, - MSGCODE_COMMAND_ACCEPTED, 0); + if (pulse8_send_and_wait(pulse8, &cmd, 1, + MSGCODE_COMMAND_ACCEPTED, 0)) { + dev_warn(pulse8->dev, "failed to ping EEPROM\n"); + goto unlock; + } if (pulse8->vers < 2) goto unlock; -- 2.40.1