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media: ov5640: fix virtual_channel parameter permissions 

Fix module_param(virtual_channel) permissions.
This problem was detected by checkpatch:
$ scripts/checkpatch.pl -f drivers/media/i2c/ov5640.c
ERROR: Use 4 digit octal (0777) not decimal permissions
+module_param(virtual_channel, int, 0);

Also add an error trace in case of virtual_channel not in
the valid range of values.

Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>
Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Hugues Fruchet 2018-02-06 08:24:09 -05:00 committed by Mauro Carvalho Chehab
parent 41d8d7f517
commit 8670d70a42
1 changed files with 7 additions and 2 deletions
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9
drivers/media/i2c/ov5640.c
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@ -128,7 +128,7 @@ static const struct ov5640_pixfmt ov5640_formats[] = {
* to set the MIPI CSI-2 virtual channel.
*/
static unsigned int virtual_channel;
module_param(virtual_channel, int, 0);
module_param(virtual_channel, uint, 0444);
MODULE_PARM_DESC(virtual_channel,
"MIPI CSI-2 virtual channel (0..3), default 0");
@ -1358,11 +1358,16 @@ static int ov5640_binning_on(struct ov5640_dev *sensor)
static int ov5640_set_virtual_channel(struct ov5640_dev *sensor)
{
struct i2c_client *client = sensor->i2c_client;
u8 temp, channel = virtual_channel;
int ret;
if (channel > 3)
if (channel > 3) {
dev_err(&client->dev,
"%s: wrong virtual_channel parameter, expected (0..3), got %d\n",
__func__, channel);
return -EINVAL;
}
ret = ov5640_read_reg(sensor, OV5640_REG_DEBUG_MODE, &temp);
if (ret)