[rt2x00-users] [PATCH -next 14/26] rt2x00: Use dma_zalloc_coherent

Joe Perches joe at perches.com
Mon Jun 16 06:37:43 AEST 2014


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

Signed-off-by: Joe Perches <joe at perches.com>
---
 drivers/net/wireless/rt2x00/rt2x00mmio.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/rt2x00/rt2x00mmio.c b/drivers/net/wireless/rt2x00/rt2x00mmio.c
index 6f236ea..f0178fd 100644
--- a/drivers/net/wireless/rt2x00/rt2x00mmio.c
+++ b/drivers/net/wireless/rt2x00/rt2x00mmio.c
@@ -119,14 +119,12 @@ static int rt2x00mmio_alloc_queue_dma(struct rt2x00_dev *rt2x00dev,
 	/*
 	 * Allocate DMA memory for descriptor and buffer.
 	 */
-	addr = dma_alloc_coherent(rt2x00dev->dev,
-				  queue->limit * queue->desc_size,
-				  &dma, GFP_KERNEL);
+	addr = dma_zalloc_coherent(rt2x00dev->dev,
+				   queue->limit * queue->desc_size, &dma,
+				   GFP_KERNEL);
 	if (!addr)
 		return -ENOMEM;
 
-	memset(addr, 0, queue->limit * queue->desc_size);
-
 	/*
 	 * Initialize all queue entries to contain valid addresses.
 	 */
-- 
1.8.1.2.459.gbcd45b4.dirty





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