Re: linux-next: build failure after merge of the drm-misc tree

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Hi all,

On Mon, 26 Feb 2024 08:41:16 +1100 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
> 
> On Tue, 20 Feb 2024 08:48:21 +1100 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
> > 
> > On Mon, 12 Feb 2024 15:15:54 +0200 Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx> wrote:  
> > >
> > > On Tue, 06 Feb 2024, Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:    
> > > >
> > > > After merging the drm-misc tree, today's linux-next build (i386 defconfig)
> > > > failed like this:
> > > >
> > > > In function 'i915_ttm_placement_from_obj',
> > > >     inlined from 'i915_ttm_get_pages' at drivers/gpu/drm/i915/gem/i915_gem_ttm.c:847:2:
> > > > drivers/gpu/drm/i915/gem/i915_gem_ttm.c:165:18: error: 'places[0].flags' is used uninitialized [-Werror=uninitialized]
> > > >   165 |         places[0].flags |= TTM_PL_FLAG_DESIRED;
> > > >       |         ~~~~~~~~~^~~~~~
> > > > drivers/gpu/drm/i915/gem/i915_gem_ttm.c: In function 'i915_ttm_get_pages':
> > > > drivers/gpu/drm/i915/gem/i915_gem_ttm.c:837:26: note: 'places' declared here
> > > >   837 |         struct ttm_place places[I915_TTM_MAX_PLACEMENTS + 1];
> > > >       |                          ^~~~~~
> > > >
> > > > Caused by commit
> > > >
> > > >   a78a8da51b36 ("drm/ttm: replace busy placement with flags v6")      
> > > 
> > > Cc: more people.
> > >     
> > > >
> > > > I applied the following hack for today:
> > > >
> > > > From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> > > > Date: Tue, 6 Feb 2024 15:17:54 +1100
> > > > Subject: [PATCH] drm/ttm: initialise places
> > > >
> > > > Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> > > > ---
> > > >  drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 2 +-
> > > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > >
> > > > diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
> > > > index 80c6cafc8887..34e699e67c25 100644
> > > > --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
> > > > +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
> > > > @@ -834,7 +834,7 @@ static int __i915_ttm_get_pages(struct drm_i915_gem_object *obj,
> > > >  
> > > >  static int i915_ttm_get_pages(struct drm_i915_gem_object *obj)
> > > >  {
> > > > -	struct ttm_place places[I915_TTM_MAX_PLACEMENTS + 1];
> > > > +	struct ttm_place places[I915_TTM_MAX_PLACEMENTS + 1] = {};
> > > >  	struct ttm_placement placement;
> > > >  
> > > >  	/* restricted by sg_alloc_table */
> > > > -- 
> > > > 2.43.0      
> > 
> > I am still applying the above patch ...  
> 
> Any progress?

And this commit is now in the drm tree.
-- 
Cheers,
Stephen Rothwell

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