From: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Date: Sat, 10 Sep 2016 16:49:01 +0000 (-0300)
Subject: [media] mb86a20s: always initialize a return value
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=19157003abe4d9ca4706fca8ff8306946f7942c6;p=linux-beck.git

[media] mb86a20s: always initialize a return value

In mb86a20s_read_status_and_stats(), when mb86a20s_read_status() fails,
the function returns the value in variable rc without initializing it
first. Fix this by propagating the error code from variable status_nr.

This bug has been found using clang and -Wsometimes-uninitialized
warning flag.

Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---

diff --git a/drivers/media/dvb-frontends/mb86a20s.c b/drivers/media/dvb-frontends/mb86a20s.c
index fe79358b035e..27f425137ce6 100644
--- a/drivers/media/dvb-frontends/mb86a20s.c
+++ b/drivers/media/dvb-frontends/mb86a20s.c
@@ -1967,6 +1967,7 @@ static int mb86a20s_read_status_and_stats(struct dvb_frontend *fe,
 	if (status_nr < 0) {
 		dev_err(&state->i2c->dev,
 			"%s: Can't read frontend lock status\n", __func__);
+		rc = status_nr;
 		goto error;
 	}