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Commit 068f3047 authored by Souptick Joarder's avatar Souptick Joarder Committed by Daniel Vetter
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drm/drm_pci.c: Use dma_zalloc_coherent 



Replace dma_alloc_coherent + memset with dma_zalloc_coherent.

Signed-off-by: default avatarSouptick Joarder <jrdr.linux@gmail.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20181023040222.GA1540@jordon-HP-15-Notebook-PC
parent 32e932e3

drivers/gpu/drm/drm_pci.c

+2 −3
Original line number Diff line number Diff line
@@ -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;