diff options
| author | Rasmus Villemoes <linux@rasmusvillemoes.dk> | 2016-02-15 18:41:45 (GMT) |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-02-16 15:05:38 (GMT) |
| commit | 09ccbb74b6718ad4d1290de3f5669212c0ac7d4b (patch) | |
| tree | 2aa07fc3611b88193f5cd8bb2cbd478b9f1b6ff2 /drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | |
| parent | bdbe58e6c60e49930d9c33e7d2b9a7789ed8c1a9 (diff) | |
| download | linux-09ccbb74b6718ad4d1290de3f5669212c0ac7d4b.tar.xz | |
drm/amdgpu: use post-decrement in error handling
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>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 6442a06..1cbb16e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -712,7 +712,7 @@ static int amdgpu_ttm_tt_populate(struct ttm_tt *ttm) 0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); if (pci_dma_mapping_error(adev->pdev, gtt->ttm.dma_address[i])) { - while (--i) { + while (i--) { pci_unmap_page(adev->pdev, gtt->ttm.dma_address[i], PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); gtt->ttm.dma_address[i] = 0; |