From: YueHaibing <yuehaibing@huawei.com>
Date: Mon, 4 Jun 2018 12:35:42 +0000 (+0800)
Subject: ath10k: use dma_zalloc_coherent instead of allocator/memset
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=9fb31b66b91ff4e6c38fa0a10e517f4282e380e7;p=linux.git

ath10k: use dma_zalloc_coherent instead of allocator/memset

Use dma_zalloc_coherent instead of dma_alloc_coherent
followed by memset 0.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---

diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c
index be841cbf80997..877249ac6fd44 100644
--- a/drivers/net/wireless/ath/ath10k/wmi.c
+++ b/drivers/net/wireless/ath/ath10k/wmi.c
@@ -5018,13 +5018,11 @@ static int ath10k_wmi_alloc_chunk(struct ath10k *ar, u32 req_id,
 	void *vaddr;
 
 	pool_size = num_units * round_up(unit_len, 4);
-	vaddr = dma_alloc_coherent(ar->dev, pool_size, &paddr, GFP_KERNEL);
+	vaddr = dma_zalloc_coherent(ar->dev, pool_size, &paddr, GFP_KERNEL);
 
 	if (!vaddr)
 		return -ENOMEM;
 
-	memset(vaddr, 0, pool_size);
-
 	ar->wmi.mem_chunks[idx].vaddr = vaddr;
 	ar->wmi.mem_chunks[idx].paddr = paddr;
 	ar->wmi.mem_chunks[idx].len = pool_size;