From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 45B6F23752 for ; Wed, 20 Sep 2023 12:04:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BF715C433C8; Wed, 20 Sep 2023 12:04:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1695211461; bh=OkfCE3he1GLwi18ZPaqIZeaJKA+Q05hFMeVGqHTYfIA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wQi7mreoAYMfR7+0aeOecIgdK3HeJ1wvPYATYt79kCHGDz0rShsoWaOslBQ2m17uU mIffRa6fM0qa6QbknhM+kaDbmF5YMsvUFJj/iVGQXqs+TzKJyz6IxLCLZ1ArJUmhui hc9ehZDsLeENtVQCxoHO+xcvhUy8CR7fhopEIv0g= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Daniil Dulov , Hans Verkuil , Sasha Levin Subject: [PATCH 4.14 076/186] media: cx24120: Add retval check for cx24120_message_send() Date: Wed, 20 Sep 2023 13:29:39 +0200 Message-ID: <20230920112839.619675823@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230920112836.799946261@linuxfoundation.org> References: <20230920112836.799946261@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Daniil Dulov [ Upstream commit 96002c0ac824e1773d3f706b1f92e2a9f2988047 ] If cx24120_message_send() returns error, we should keep local struct unchanged. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: 5afc9a25be8d ("[media] Add support for TechniSat Skystar S2") Signed-off-by: Daniil Dulov Signed-off-by: Hans Verkuil Signed-off-by: Sasha Levin --- drivers/media/dvb-frontends/cx24120.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/media/dvb-frontends/cx24120.c b/drivers/media/dvb-frontends/cx24120.c index 7f11dcc94d854..869fb1a9ddf38 100644 --- a/drivers/media/dvb-frontends/cx24120.c +++ b/drivers/media/dvb-frontends/cx24120.c @@ -980,7 +980,9 @@ static void cx24120_set_clock_ratios(struct dvb_frontend *fe) cmd.arg[8] = (clock_ratios_table[idx].rate >> 8) & 0xff; cmd.arg[9] = (clock_ratios_table[idx].rate >> 0) & 0xff; - cx24120_message_send(state, &cmd); + ret = cx24120_message_send(state, &cmd); + if (ret != 0) + return; /* Calculate ber window rates for stat work */ cx24120_calculate_ber_window(state, clock_ratios_table[idx].rate); -- 2.40.1