linux-kernel - [PATCH -next 07/26] gpu: Use dma_zalloc

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Date:	Sun, 15 Jun 2014 13:37:36 -0700
From:	Joe Perches <joe@...ches.com>
To:	linux-kernel@...r.kernel.org
Cc:	David Airlie <airlied@...ux.ie>, dri-devel@...ts.freedesktop.org
Subject: [PATCH -next 07/26] gpu: Use dma_zalloc_coherent

Use the zeroing function instead of dma_alloc_coherent & memset(,0,)

Signed-off-by: Joe Perches <joe@...ches.com>
---
 drivers/gpu/drm/drm_pci.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c
index 020cfd9..6b3ca60 100644
--- a/drivers/gpu/drm/drm_pci.c
+++ b/drivers/gpu/drm/drm_pci.c
@@ -55,15 +55,13 @@ 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;
-- 
1.8.1.2.459.gbcd45b4.dirty

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