[Intel-gfx] [PATCH 05/21] drm/i915/gtt: Don't leak scratch page on mapping error

[Mika Kuoppala]

Free the scratch page if dma mapping fails.

Signed-off-by: Mika Kuoppala <mika.kuoppala at intel.com>
---
 drivers/gpu/drm/i915/i915_gem_gtt.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index c61de4a..a608b1b 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -2191,8 +2191,10 @@ static int setup_scratch_page(struct drm_device *dev)
 #ifdef CONFIG_INTEL_IOMMU
 	dma_addr = pci_map_page(dev->pdev, page, 0, PAGE_SIZE,
 				PCI_DMA_BIDIRECTIONAL);
-	if (pci_dma_mapping_error(dev->pdev, dma_addr))
+	if (pci_dma_mapping_error(dev->pdev, dma_addr)) {
+		__free_page(page);
 		return -EINVAL;
+	}
 #else
 	dma_addr = page_to_phys(page);
 #endif
-- 
1.9.1