linux-kernel - [PATCH 5.7 128/376] media: m88ds3103: error in set

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Date:   Fri, 19 Jun 2020 16:30:46 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        coverity-bot <keescook+coverity-bot@...omium.org>,
        Sean Young <sean@...s.org>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.7 128/376] media: m88ds3103: error in set_frontend is swallowed and not reported

From: Sean Young <sean@...s.org>

[ Upstream commit c4ed27cfed45c16c2dd16c9fa3b883e306177e40 ]

Bail out if registers can not be updated.

Addresses-Coverity-ID: 1461655 ("Code maintainability issues")

Reported-by: coverity-bot <keescook+coverity-bot@...omium.org>
Fixes: e6089feca460 ("media: m88ds3103: Add support for ds3103b demod")
Signed-off-by: Sean Young <sean@...s.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/media/dvb-frontends/m88ds3103.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/media/dvb-frontends/m88ds3103.c b/drivers/media/dvb-frontends/m88ds3103.c
index d2c28dcf6b42..abddab02db9e 100644
--- a/drivers/media/dvb-frontends/m88ds3103.c
+++ b/drivers/media/dvb-frontends/m88ds3103.c
@@ -980,6 +980,8 @@ static int m88ds3103_set_frontend(struct dvb_frontend *fe)
 			goto err;
 
 		ret = m88ds3103_update_bits(dev, 0xc9, 0x08, 0x08);
+		if (ret)
+			goto err;
 	}
 
 	dev_dbg(&client->dev, "carrier offset=%d\n",
-- 
2.25.1