4.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Daniil Dulov <d.dulov@xxxxxxxxxx>
[ 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 <d.dulov@xxxxxxxxxx>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 dd3ec316e7c2a..d6107f3270a6d 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
