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

[Andrzej Hajda]

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.a...@intel.com>
Signed-off-by: Nirmoy Das <nirmoy....@intel.com > ---
  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.ha...@intel.com>

Regards
Andrzej

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