On Thu, 14 Jul 2011, Laurent Pinchart wrote:
> Hi Michael,
>
> On Tuesday 12 July 2011 17:39:04 Michael Grzeschik wrote:
> > Signed-off-by: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx>
> > ---
> > drivers/media/video/mt9m111.c | 7 ++++---
> > 1 files changed, 4 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/media/video/mt9m111.c b/drivers/media/video/mt9m111.c
> > index e08b46c..8ad99a9 100644
> > --- a/drivers/media/video/mt9m111.c
> > +++ b/drivers/media/video/mt9m111.c
> > @@ -170,6 +170,7 @@ struct mt9m111 {
> > enum mt9m111_context context;
> > struct v4l2_rect rect;
> > const struct mt9m111_datafmt *fmt;
> > + int lastpage;
> > unsigned int gain;
> > unsigned char autoexposure;
> > unsigned char datawidth;
> > @@ -192,17 +193,17 @@ static int reg_page_map_set(struct i2c_client
> > *client, const u16 reg) {
> > int ret = 0;
> > u16 page;
> > - static int lastpage = -1; /* PageMap cache value */
>
> You're loosing lastpage initialization to -1.
Seconded. A fixed version of this patch will ve welcome for 3.2.
Thanks
Guennadi
>
> > + struct mt9m111 *mt9m111 = to_mt9m111(client);
> >
> > page = (reg >> 8);
> > - if (page == lastpage)
> > + if (page == mt9m111->lastpage)
> > return 0;
> > if (page > 2)
> > return -EINVAL;
> >
> > ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
> > if (!ret)
> > - lastpage = page;
> > + mt9m111->lastpage = page;
> > return ret;
> > }
>
> --
> Regards,
>
> Laurent Pinchart
>
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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