From ea3f5d261fb0b757f95c1657f71ac86eb1778fd1 Mon Sep 17 00:00:00 2001 From: Mika Kuoppala Date: Fri, 22 May 2015 20:04:58 +0300 Subject: [PATCH] drm/i915/gtt: Don't leak scratch page on mapping error Free the scratch page if dma mapping fails. Signed-off-by: Mika Kuoppala Reviewed-by: Joonas Lahtinen Signed-off-by: Daniel Vetter --- 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 619dad1b2386..5e3bfa94221b 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -2143,8 +2143,10 @@ 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 -- 2.20.1