[PATCH] brcmfmac: Use zeroing memory allocator than allocator/memset

[Himanshu Jha]

Use dma_zalloc_coherent for allocating zeroed
memory and remove unnecessary memset function.

Done using Coccinelle.
Generated-by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci
0-day tested with no failures.

Suggested-by: Luis R. Rodriguez <mcg...@kernel.org>
Signed-off-by: Himanshu Jha <himanshujha199...@gmail.com>
---
 .../net/wireless/broadcom/brcm80211/brcmfmac/pcie.c    | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c 
b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
index 3c87157..bdef2ac 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
@@ -1251,14 +1251,13 @@ static int brcmf_pcie_init_scratchbuffers(struct 
brcmf_pciedev_info *devinfo)
        u64 address;
        u32 addr;
 
-       devinfo->shared.scratch = dma_alloc_coherent(&devinfo->pdev->dev,
-               BRCMF_DMA_D2H_SCRATCH_BUF_LEN,
-               &devinfo->shared.scratch_dmahandle, GFP_KERNEL);
+       devinfo->shared.scratch =
+               dma_zalloc_coherent(&devinfo->pdev->dev,
+                                       BRCMF_DMA_D2H_SCRATCH_BUF_LEN,
+                                       &devinfo->shared.scratch_dmahandle,
+                                       GFP_KERNEL);
        if (!devinfo->shared.scratch)
                goto fail;
 
-       memset(devinfo->shared.scratch, 0, BRCMF_DMA_D2H_SCRATCH_BUF_LEN);
-
        addr = devinfo->shared.tcm_base_address +
               BRCMF_SHARED_DMA_SCRATCH_ADDR_OFFSET;
        address = (u64)devinfo->shared.scratch_dmahandle;
@@ -1268,14 +1267,13 @@ static int brcmf_pcie_init_scratchbuffers(struct 
brcmf_pciedev_info *devinfo)
               BRCMF_SHARED_DMA_SCRATCH_LEN_OFFSET;
        brcmf_pcie_write_tcm32(devinfo, addr, BRCMF_DMA_D2H_SCRATCH_BUF_LEN);
 
-       devinfo->shared.ringupd = dma_alloc_coherent(&devinfo->pdev->dev,
-               BRCMF_DMA_D2H_RINGUPD_BUF_LEN,
-               &devinfo->shared.ringupd_dmahandle, GFP_KERNEL);
+       devinfo->shared.ringupd =
+               dma_zalloc_coherent(&devinfo->pdev->dev,
+                                       BRCMF_DMA_D2H_RINGUPD_BUF_LEN,
+                                       &devinfo->shared.ringupd_dmahandle,
+                                       GFP_KERNEL);
        if (!devinfo->shared.ringupd)
                goto fail;
 
-       memset(devinfo->shared.ringupd, 0, BRCMF_DMA_D2H_RINGUPD_BUF_LEN);
-
        addr = devinfo->shared.tcm_base_address +
               BRCMF_SHARED_DMA_RINGUPD_ADDR_OFFSET;
        address = (u64)devinfo->shared.ringupd_dmahandle;
-- 
2.7.4