On Wed, Jan 31, 2018 at 12:19:24PM +0100, Hugues Fruchet wrote: > Add an error trace in ov5640_read_reg() in case of i2c_transfer() > failure. > > Signed-off-by: Hugues Fruchet <hugues.fruchet@xxxxxx> > --- > drivers/media/i2c/ov5640.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c > index 99a5902..882a7c3 100644 > --- a/drivers/media/i2c/ov5640.c > +++ b/drivers/media/i2c/ov5640.c > @@ -868,8 +868,11 @@ static int ov5640_read_reg(struct ov5640_dev *sensor, u16 reg, u8 *val) > msg[1].len = 1; > > ret = i2c_transfer(client->adapter, msg, 2); > - if (ret < 0) > + if (ret < 0) { > + v4l2_err(&sensor->sd, "%s: error: reg=%x\n", The driver uses dev_ macros almost universally, how about doing the same here? > + __func__, reg); > return ret; > + } > > *val = buf[0]; > return 0; > -- > 1.9.1 > -- Sakari Ailus e-mail: sakari.ailus@xxxxxx