Re: [PATCH v2 4/7] drm/i915/sdvo: Check that we have space for the infoframe

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On Tue, 2019-04-23 at 17:34 +0300, Ville Syrjälä wrote:
> On Mon, Apr 22, 2019 at 06:37:48PM +0000, Sripada, Radhakrishna
> wrote:
> > On Wed, 2019-04-10 at 20:08 +0300, Ville Syrjala wrote:
> > > From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> > > 
> > > Before we go writing the infoframe let's make sure we have
> > > the space for it. Not that it really matters since the write
> > > loop would just terminate early in that case.
> > > 
> > > v2: Check after the debug print and ++ (Chris)
> > > 
> > > Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> > > Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> > > ---
> > >  drivers/gpu/drm/i915/intel_sdvo.c | 3 +++
> > >  1 file changed, 3 insertions(+)
> > > 
> > > diff --git a/drivers/gpu/drm/i915/intel_sdvo.c
> > > b/drivers/gpu/drm/i915/intel_sdvo.c
> > > index 7f64352a3413..14348dfb024a 100644
> > > --- a/drivers/gpu/drm/i915/intel_sdvo.c
> > > +++ b/drivers/gpu/drm/i915/intel_sdvo.c
> > > @@ -976,6 +976,9 @@ static bool intel_sdvo_write_infoframe(struct
> > > intel_sdvo *intel_sdvo,
> > >  	DRM_DEBUG_KMS("writing sdvo hbuf: %i, hbuf_size %i, hbuf_size:
> > > %i\n",
> > >  		      if_index, length, hbuf_size);
> > 
> > If the above line is newly added why dont I See a + at the
> > beginning of
> > the line? Is it from a previous version of the patch?
> 
> It's not newly added. What gave you the idea that it was?
NVM. I was comparing the raw diffs between v1 and v2 of the patch and
missed the above line in the context lines in v1 of the patch. Just a
minor code move around. Will be cautious in future reviews.

LGTM.
Reviewed-by: Radhakrishna Sripada <radhakrishna.sripada@xxxxxxxxx>
> 
> > 
> > -Radhakrishna(RK) Sripada
> > >  
> > > +	if (hbuf_size < length)
> > > +		return false;
> > > +
> > >  	for (i = 0; i < hbuf_size; i += 8) {
> > >  		memset(tmp, 0, 8);
> > >  		if (i < length)
> 
> 
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