This change adds checks for register read errors and returns correct
error code.
Cc: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>
Cc: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Cc: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Cc: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
---
drivers/media/i2c/ov772x.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/media/i2c/ov772x.c b/drivers/media/i2c/ov772x.c
index 283ae2c..c56f910 100644
--- a/drivers/media/i2c/ov772x.c
+++ b/drivers/media/i2c/ov772x.c
@@ -1169,8 +1169,15 @@ static int ov772x_video_probe(struct ov772x_priv *priv)
return ret;
/* Check and show product ID and manufacturer ID. */
- pid = ov772x_read(client, PID);
- ver = ov772x_read(client, VER);
+ ret = ov772x_read(client, PID);
+ if (ret < 0)
+ return ret;
+ pid = ret;
+
+ ret = ov772x_read(client, VER);
+ if (ret < 0)
+ return ret;
+ ver = ret;
switch (VERSION(pid, ver)) {
case OV7720:
--
2.7.4
