From a21a0eb56b4e8fe4a330243af8030f890cde2283 Mon Sep 17 00:00:00 2001
From: Aditya Pakki <pakki001@umn.edu>
Date: Fri, 28 Dec 2018 13:37:36 -0500
Subject: [PATCH] media: gspca: Check the return value of write_bridge for
timeout
In po1030_probe(), m5602_write_bridge() can timeout and return an error
value. The fix checks for the return value and propagates upstream
consistent with other usb drivers.
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
---
drivers/media/usb/gspca/m5602/m5602_po1030.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/media/usb/gspca/m5602/m5602_po1030.c b/drivers/media/usb/gspca/m5602/m5602_po1030.c
index 37d2891e5f5b6..5e43b4782f027 100644
--- a/drivers/media/usb/gspca/m5602/m5602_po1030.c
+++ b/drivers/media/usb/gspca/m5602/m5602_po1030.c
@@ -158,6 +158,7 @@ static const struct v4l2_ctrl_config po1030_greenbal_cfg = {
int po1030_probe(struct sd *sd)
{
+ int rc = 0;
u8 dev_id_h = 0, i;
struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
@@ -177,11 +178,14 @@ int po1030_probe(struct sd *sd)
for (i = 0; i < ARRAY_SIZE(preinit_po1030); i++) {
u8 data = preinit_po1030[i][2];
if (preinit_po1030[i][0] == SENSOR)
- m5602_write_sensor(sd,
+ rc |= m5602_write_sensor(sd,
preinit_po1030[i][1], &data, 1);
else
- m5602_write_bridge(sd, preinit_po1030[i][1], data);
+ rc |= m5602_write_bridge(sd, preinit_po1030[i][1],
+ data);
}
+ if (rc < 0)
+ return rc;
if (m5602_read_sensor(sd, PO1030_DEVID_H, &dev_id_h, 1))
return -ENODEV;