HI Mauro,
On Tue, Mar 06, 2018 at 10:40:10AM -0300, Mauro Carvalho Chehab wrote:
> Em Thu, 8 Feb 2018 11:41:59 +0200
> Todor Tomov <todor.tomov@xxxxxxxxxx> escreveu:
>
> > I2C transfer functions return number of successful operations (on success).
> >
> > Do not return the received positive return code but instead return 0 on
> > success. The users of write_reg function already use this logic.
> >
> > Signed-off-by: Todor Tomov <todor.tomov@xxxxxxxxxx>
> > ---
> > drivers/media/i2c/ov5645.c | 6 ++++--
> > 1 file changed, 4 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/media/i2c/ov5645.c b/drivers/media/i2c/ov5645.c
> > index d28845f..9755562 100644
> > --- a/drivers/media/i2c/ov5645.c
> > +++ b/drivers/media/i2c/ov5645.c
> > @@ -600,11 +600,13 @@ static int ov5645_write_reg(struct ov5645 *ov5645, u16 reg, u8 val)
> > regbuf[2] = val;
> >
> > ret = i2c_master_send(ov5645->i2c_client, regbuf, 3);
> > - if (ret < 0)
> > + if (ret < 0) {
> > dev_err(ov5645->dev, "%s: write reg error %d: reg=%x, val=%x\n",
> > __func__, ret, reg, val);
> > + return ret;
> > + }
>
> Actually, if ret < 3, it should return an error too (like -EREMOTEIO
> or -EIO).
i2c_master_send() always returns a negative error code or the number of
octets written.
But thank you for reminding me about the patch. :-)
--
Regards,
Sakari Ailus
sakari.ailus@xxxxxxxxxxxxxxx
