# Re: \[PATCH V2 2/3\] OMAPDSS: DISPC: Handle synclost errors in OMAP3

- From: Tomi Valkeinen \<hidden\>
- Date: 2012-03-27 11:10:16 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2012/03/13462806
- Thread: https://ratatoskr.run/linux-omap/2012/03/13462803/t.md

```text
On Tue, 2012-03-27 at 16:31 +0530, Mahapatra, Chandrabhanu wrote:
> On Tue, Mar 27, 2012 at 4:13 PM, Tomi Valkeinen [ref] wrote:
> > Hi,
> >
> > On Wed, 2012-03-21 at 15:21 +0530, Chandrabhanu Mahapatra wrote:
> >> In OMAP3 DISPC video overlays suffer from some undocumented horizontal position
> >> and timing related limitations leading to SYNCLOST errors. Whenever the image
> >> window is moved towards the right of the screen SYNCLOST errors become
> >> frequent. Checks have been implemented to see that DISPC driver rejects
> >> configuration exceeding above limitations.
> >>
> >> This code was successfully tested on OMAP3. This code is written based on code
> >> written by Ville Syrjälä [ref] in Linux OMAP kernel. Ville
> >> Syrjälä [ref] had added checks for video overlay horizontal
> >> timing and DISPC horizontal blanking length limitations.
> >>
> >> Signed-off-by: Chandrabhanu Mahapatra <redacted>
> >> ---
> >>  drivers/video/omap2/dss/dispc.c |   97 +++++++++++++++++++++++++++++----------
> >>  1 files changed, 72 insertions(+), 25 deletions(-)
> >
> > The patch seems to be using dos line endings... Where did they come
> > from? The two others are fine. I think git am removed the dos line
> > endings, so it's fine.
> >
> 
> How did you find these errors? scripts/checkpatch.pl still returns me nothing.

Well I just saved the email and ran checkpatch. Could be a problem in
gmail or my end too, but I've never seen it happen before.

 Tomi

```

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