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drm/drm_pci.c: Use dma_zalloc_coherent 

Replace dma_alloc_coherent + memset with dma_zalloc_coherent.

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20181023040222.GA1540@jordon-HP-15-Notebook-PC
This commit is contained in:
Souptick Joarder 2018-10-23 09:32:22 +05:30 committed by Daniel Vetter
parent 32e932e37e
commit 068f304781
1 changed files with 2 additions and 3 deletions
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5
drivers/gpu/drm/drm_pci.c
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@ -61,15 +61,14 @@ drm_dma_handle_t *drm_pci_alloc(struct drm_device * dev, size_t size, size_t ali
return NULL;
dmah->size = size;
dmah->vaddr = dma_alloc_coherent(&dev->pdev->dev, size, &dmah->busaddr, GFP_KERNEL | __GFP_COMP);
dmah->vaddr = dma_zalloc_coherent(&dev->pdev->dev, size, &dmah->busaddr,
GFP_KERNEL | __GFP_COMP);
if (dmah->vaddr == NULL) {
kfree(dmah);
return NULL;
}
memset(dmah->vaddr, 0, size);
/* XXX - Is virt_to_page() legal for consistent mem? */
/* Reserve */
for (addr = (unsigned long)dmah->vaddr, sz = size;