dmaengine: use kmem_cache_zalloc instead of kmem_cache_alloc/memset
Author: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Using kmem_cache_zalloc() instead of kmem_cache_alloc() and memset().
spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)
Signed-off-by: Wei Yongjun
Signed-off-by: Vinod Koul
---
drivers/dma/ioat/dma_v2.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/dma/ioat/dma_v2.c b/drivers/dma/ioat/dma_v2.c
index 8689576..b9d6678 100644
--- a/drivers/dma/ioat/dma_v2.c
+++ b/drivers/dma/ioat/dma_v2.c
@@ -434,12 +434,11 @@ static struct ioat_ring_ent *ioat2_alloc_ring_ent(struct dma_chan *chan, gfp_t f
return NULL;
memset(hw, 0, sizeof(*hw));
- desc = kmem_cache_alloc(ioat2_cache, flags);
+ desc = kmem_cache_zalloc(ioat2_cache, flags);
if (!desc) {
pci_pool_free(dma->dma_pool, hw, phys);
return NULL;
}
- memset(desc, 0, sizeof(*desc));
dma_async_tx_descriptor_init(&desc->txd, chan);
desc->txd.tx_submit = ioat2_tx_submit_unlock; |
---
drivers/dma/ioat/dma_v2.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/dma/ioat/dma_v2.c b/drivers/dma/ioat/dma_v2.c
index 8689576..b9d6678 100644
--- a/drivers/dma/ioat/dma_v2.c
+++ b/drivers/dma/ioat/dma_v2.c
@@ -434,12 +434,11 @@ static struct ioat_ring_ent *ioat2_alloc_ring_ent(struct dma_chan *chan, gfp_t f
return NULL;
memset(hw, 0, sizeof(*hw));
- desc = kmem_cache_alloc(ioat2_cache, flags);
+ desc = kmem_cache_zalloc(ioat2_cache, flags);
if (!desc) {
pci_pool_free(dma->dma_pool, hw, phys);
return NULL;
}
- memset(desc, 0, sizeof(*desc));
dma_async_tx_descriptor_init(&desc->txd, chan);
desc->txd.tx_submit = ioat2_tx_submit_unlock;