drm/amdgpu: use post-decrement in error handling
authorRasmus Villemoes <linux@rasmusvillemoes.dk>
Mon, 15 Feb 2016 18:41:45 +0000 (19:41 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 3 Mar 2016 23:07:19 +0000 (15:07 -0800)
commit8fb49d08fa1bb7a38545d0e7e7eeb2f8feae31f6
treee28c9578939a64f70e290acb52df829fb140c54e
parent4d6bc4fa3202a28dab7a4c03c22a569b87f98f84
drm/amdgpu: use post-decrement in error handling

commit 09ccbb74b6718ad4d1290de3f5669212c0ac7d4b upstream.

We need to use post-decrement to get the pci_map_page undone also for
i==0, and to avoid some very unpleasant behaviour if pci_map_page
failed already at i==0.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c