Re: linux-next: build warning after merge of the amdgpu tree

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On 12/12, Stephen Rothwell wrote:
> Hi all,
> 
> On Tue, 12 Dec 2023 11:04:15 +1100 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
> >
> > After merging the amdgpu tree, today's linux-next build (arm
> > multi_v7_defconfig) produced this warning:
> > 
> > drivers/gpu/drm/drm_atomic_uapi.c:366:1: warning: 'drm_atomic_replace_property_blob_from_id' defined but not used [-Wunused-function]
> >   366 | drm_atomic_replace_property_blob_from_id(struct drm_device *dev,
> >       | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > 
> > Introduced by commit
> > 
> >   1d2b049e4582 ("drm/drm_property: make replace_property_blob_from_id a DRM helper")
> 
> This became a build failure in the i386 defconfig build, so I applied
> the following patch for today.

Yes, I also noticed it yesterday when building amd-staging-drm-next.

Something went wrong when they applied this patch:
https://lore.kernel.org/amd-gfx/20231116195812.906115-3-mwen@xxxxxxxxxx/
and your patch below is exactly the part of this patch ^ that is
missing.

In addition, only the first four patches of the series were applied.

Thanks,

Melissa

> 
> From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> Date: Tue, 12 Dec 2023 13:53:55 +1100
> Subject: [PATCH] drm: remove unused function drm_atomic_replace_property_blob_from_id()
> 
> Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/drm_atomic_uapi.c | 42 -------------------------------
>  1 file changed, 42 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
> index 70ddbb93e466..29d4940188d4 100644
> --- a/drivers/gpu/drm/drm_atomic_uapi.c
> +++ b/drivers/gpu/drm/drm_atomic_uapi.c
> @@ -362,48 +362,6 @@ static s32 __user *get_out_fence_for_connector(struct drm_atomic_state *state,
>  	return fence_ptr;
>  }
>  
> -static int
> -drm_atomic_replace_property_blob_from_id(struct drm_device *dev,
> -					 struct drm_property_blob **blob,
> -					 uint64_t blob_id,
> -					 ssize_t expected_size,
> -					 ssize_t expected_elem_size,
> -					 bool *replaced)
> -{
> -	struct drm_property_blob *new_blob = NULL;
> -
> -	if (blob_id != 0) {
> -		new_blob = drm_property_lookup_blob(dev, blob_id);
> -		if (new_blob == NULL) {
> -			drm_dbg_atomic(dev,
> -				       "cannot find blob ID %llu\n", blob_id);
> -			return -EINVAL;
> -		}
> -
> -		if (expected_size > 0 &&
> -		    new_blob->length != expected_size) {
> -			drm_dbg_atomic(dev,
> -				       "[BLOB:%d] length %zu different from expected %zu\n",
> -				       new_blob->base.id, new_blob->length, expected_size);
> -			drm_property_blob_put(new_blob);
> -			return -EINVAL;
> -		}
> -		if (expected_elem_size > 0 &&
> -		    new_blob->length % expected_elem_size != 0) {
> -			drm_dbg_atomic(dev,
> -				       "[BLOB:%d] length %zu not divisible by element size %zu\n",
> -				       new_blob->base.id, new_blob->length, expected_elem_size);
> -			drm_property_blob_put(new_blob);
> -			return -EINVAL;
> -		}
> -	}
> -
> -	*replaced |= drm_property_replace_blob(blob, new_blob);
> -	drm_property_blob_put(new_blob);
> -
> -	return 0;
> -}
> -
>  static int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
>  		struct drm_crtc_state *state, struct drm_property *property,
>  		uint64_t val)
> -- 
> 2.40.1
> 
> -- 
> Cheers,
> Stephen Rothwell






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