[PATCH v2 1/6] drm/i915/ttm: fix sparse warning

[Das, Nirmoy]

On 1/30/2023 1:06 PM, Matthew Auld wrote:
> Sparse complains with:
>
> drivers/gpu/drm/i915/gem/i915_gem_ttm.c:1066:21: sparse:
> 	expected restricted vm_fault_t [assigned] [usertype] ret
> drivers/gpu/drm/i915/gem/i915_gem_ttm.c:1066:21: sparse: got int
>
> Fixes: 516198d317d8 ("drm/i915: audit bo->resource usage v3")
> Reported-by: kernel test robot <lkp at intel.com>
> Signed-off-by: Matthew Auld <matthew.auld at intel.com>
> Cc: Christian König <ckoenig.leichtzumerken at gmail.com>
> Reviewed-by: Andrzej Hajda <andrzej.hajda at intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das at intel.com>
> ---
>   drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 5 +++--
>   1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
> index 7420276827a5..4758f21c91e1 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
> @@ -1067,11 +1067,12 @@ static vm_fault_t vm_fault_ttm(struct vm_fault *vmf)
>   			.interruptible = true,
>   			.no_wait_gpu = true, /* should be idle already */
>   		};
> +		int err;
>   
>   		GEM_BUG_ON(!bo->ttm || !(bo->ttm->page_flags & TTM_TT_FLAG_SWAPPED));
>   
> -		ret = ttm_bo_validate(bo, i915_ttm_sys_placement(), &ctx);
> -		if (ret) {
> +		err = ttm_bo_validate(bo, i915_ttm_sys_placement(), &ctx);
> +		if (err) {
>   			dma_resv_unlock(bo->base.resv);
>   			return VM_FAULT_SIGBUS;
>   		}