diff options
| author |   Chuanxiao Dong <chuanxiao.dong@intel.com> | 2017-03-01 14:34:52 +0800 |
|---|---|---|
| committer |   Zhenyu Wang <zhenyuw@linux.intel.com> | 2017-03-01 15:59:36 +0800 |
| commit | b6b6fbc8310e1b12b05717da9df6953b138f812b (patch) | |
| tree | 1d9e899529710989c79f0ec3dfc2917b9f25d2cc /drivers/gpu | |
| parent | drm/i915/gvt: set SFUSE_STRAP properly for vitual monitor detection (diff) | |
| download | linux-dev-b6b6fbc8310e1b12b05717da9df6953b138f812b.tar.xz linux-dev-b6b6fbc8310e1b12b05717da9df6953b138f812b.zip | |
drm/i915/gvt: use pfn_valid for better checking
Before get the page from pfn, use pfn_valid to check if pfn
is able to translate to page structure.
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/kvmgt.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c index 182914c22ac5..241354890603 100644 --- a/drivers/gpu/drm/i915/gvt/kvmgt.c +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c @@ -96,10 +96,10 @@ static int gvt_dma_map_iova(struct intel_vgpu *vgpu, kvm_pfn_t pfn, struct device *dev = &vgpu->gvt->dev_priv->drm.pdev->dev; dma_addr_t daddr; - page = pfn_to_page(pfn); - if (is_error_page(page)) + if (unlikely(!pfn_valid(pfn))) return -EFAULT; + page = pfn_to_page(pfn); daddr = dma_map_page(dev, page, 0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); if (dma_mapping_error(dev, daddr)) |