Re: [PATCH v2] drm/i915: Improve debug print in vm_fault_ttm

[Andrzej Hajda <andrzej.hajda@xxxxxxxxx>]

On 23.09.2022 10:45, Nirmoy Das wrote:
> Print the error code returned by __i915_ttm_migrate()
> for better debuggability.
>
> v2: Fix kernel test robot warning.
>
> References: https://gitlab.freedesktop.org/drm/intel/-/issues/6889
> Acked-by: Matthew Auld <matthew.auld@xxxxxxxxx>
> Signed-off-by: Nirmoy Das <nirmoy.das@xxxxxxxxx > ---
>   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 e3fc38dd5db0..55455321f652 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
> @@ -1034,7 +1034,7 @@ static vm_fault_t vm_fault_ttm(struct vm_fault *vmf)
>   		}
>   
>   		if (err) {
> -			drm_dbg(dev, "Unable to make resource CPU accessible\n");
> +			drm_dbg(dev, "Unable to make resource CPU accessible(err = %pe)\n", ERR_PTR(err));

Reviewed-by: Andrzej Hajda <andrzej.hajda@xxxxxxxxx>

Regards
Andrzej

>   			dma_resv_unlock(bo->base.resv);
>   			ret = VM_FAULT_SIGBUS;
>   			goto out_rpm;