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drm/i915/kvmgt: fix an error code in gvt_dma_map_page() 

The dma_mapping_error() returns true on error but we want to return
-ENOMEM here.

Fixes: 79e542f5af ("drm/i915/kvmgt: Support setting dma map for huge pages")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
This commit is contained in:
Dan Carpenter 2018-07-19 11:19:21 +03:00 committed by Zhenyu Wang
parent 3237c0dbe2
commit 13bdff337e
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/i915/gvt/kvmgt.c
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@ -187,14 +187,14 @@ static int gvt_dma_map_page(struct intel_vgpu *vgpu, unsigned long gfn,
/* Setup DMA mapping. */
*dma_addr = dma_map_page(dev, page, 0, size, PCI_DMA_BIDIRECTIONAL);
ret = dma_mapping_error(dev, *dma_addr);
if (ret) {
if (dma_mapping_error(dev, *dma_addr)) {
gvt_vgpu_err("DMA mapping failed for pfn 0x%lx, ret %d\n",
page_to_pfn(page), ret);
gvt_unpin_guest_page(vgpu, gfn, size);
return -ENOMEM;
}
return ret;
return 0;
}
static void gvt_dma_unmap_page(struct intel_vgpu *vgpu, unsigned long gfn,