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Subject: media: ov5640: fix virtual_channel parameter permissions
Author: Hugues Fruchet <hugues.fruc...@st.com>
Date: Tue Feb 6 08:24:09 2018 -0500
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.fruc...@st.com>
Reviewed-by: Jacopo Mondi <jacopo+rene...@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mche...@s-opensource.com>
drivers/media/i2c/ov5640.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
index 696a28bde1b4..3e7b43ce2b7a 100644
--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -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)
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