Use dma_zalloc_coherent instead of dma_alloc_coherent
followed by memset 0.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
if (!ring->buf)
goto no_tx_mem;
- ring->dma = dma_alloc_coherent(eth->dev,
- MTK_DMA_SIZE * sz,
- &ring->phys,
- GFP_ATOMIC | __GFP_ZERO);
+ ring->dma = dma_zalloc_coherent(eth->dev, MTK_DMA_SIZE * sz,
+ &ring->phys, GFP_ATOMIC);
if (!ring->dma)
goto no_tx_mem;
- memset(ring->dma, 0, MTK_DMA_SIZE * sz);
for (i = 0; i < MTK_DMA_SIZE; i++) {
int next = (i + 1) % MTK_DMA_SIZE;
u32 next_ptr = ring->phys + next * sz;