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| author | Rasmus Villemoes <[email protected]> | 2016-02-15 18:41:45 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2016-02-16 15:05:38 +0000 |
| commit | 09ccbb74b6718ad4d1290de3f5669212c0ac7d4b (patch) | |
| tree | 2aa07fc3611b88193f5cd8bb2cbd478b9f1b6ff2 /drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | |
| parent | Merge tag 'drm-intel-fixes-2016-02-12' of git://anongit.freedesktop.org/drm-i... (diff) | |
| download | kernel-09ccbb74b6718ad4d1290de3f5669212c0ac7d4b.tar.gz kernel-09ccbb74b6718ad4d1290de3f5669212c0ac7d4b.zip | |
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 <[email protected]>
Signed-off-by: Rasmus Villemoes <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Cc: [email protected]
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 6442a06d6fdc..1cbb16e15307 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; |