@@ -204,11 +204,13 @@ static int ov5647_write(struct v4l2_subdev *sd, u16 reg, u8 val)
int ret;
ret = i2c_master_send(client, data, 3);
- if (ret < 0)
+ if (ret < 0) {
dev_dbg(&client->dev, "%s: i2c write error, reg: %x\n",
__func__, reg);
+ return ret;
+ }
- return ret;
+ return 0;
}
static int ov5647_read(struct v4l2_subdev *sd, u16 reg, u8 *val)
@@ -225,11 +227,13 @@ static int ov5647_read(struct v4l2_subdev *sd, u16 reg, u8 *val)
}
ret = i2c_master_recv(client, val, 1);
- if (ret < 0)
+ if (ret < 0) {
dev_dbg(&client->dev, "%s: i2c read error, reg: %x\n",
__func__, reg);
+ return ret;
+ }
- return ret;
+ return 0;
}
static int ov5647_write_array(struct v4l2_subdev *sd,
The ov5647_read()/ov5647_write() return in case of success the number of bytes read or written respectively. This requires callers to check if the return value is less than zero to detect an error. Unfortunately, in several places, callers directly return the result of a read/write call, causing issues when the returned valued is checked to be different from zero to detect an error. Fix this by returning zero if i2c_master_send() and i2c_master_read() return a positive value (the number of bytes written or read). Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> --- drivers/media/i2c/ov5647.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-)