[PATCH] wcn36xx: replace dma_alloc_coherent + memset with dma_zalloc_coherent

[Colin King]

From: Colin Ian King <colin.k...@canonical.com>

It is preferable to use dma_zalloc_coherent rather than dam_alloc_coherent
and memset, so use it.

Signed-off-by: Colin Ian King <colin.k...@canonical.com>
---
 drivers/net/wireless/ath/wcn36xx/dxe.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/ath/wcn36xx/dxe.c 
b/drivers/net/wireless/ath/wcn36xx/dxe.c
index 06cfe8d311f3..e66ddaa39523 100644
--- a/drivers/net/wireless/ath/wcn36xx/dxe.c
+++ b/drivers/net/wireless/ath/wcn36xx/dxe.c
@@ -174,13 +174,11 @@ static int wcn36xx_dxe_init_descs(struct device *dev, 
struct wcn36xx_dxe_ch *wcn
        int i;
 
        size = wcn_ch->desc_num * sizeof(struct wcn36xx_dxe_desc);
-       wcn_ch->cpu_addr = dma_alloc_coherent(dev, size, &wcn_ch->dma_addr,
-                                             GFP_KERNEL);
+       wcn_ch->cpu_addr = dma_zalloc_coherent(dev, size, &wcn_ch->dma_addr,
+                                              GFP_KERNEL);
        if (!wcn_ch->cpu_addr)
                return -ENOMEM;
 
-       memset(wcn_ch->cpu_addr, 0, size);
-
        cur_dxe = (struct wcn36xx_dxe_desc *)wcn_ch->cpu_addr;
        cur_ctl = wcn_ch->head_blk_ctl;
 
-- 
2.17.1