package/kernel/mac80211/patches/317-v4.16-0001-brcmfmac-Use-zeroing-memory-allocator-than-allocator.patch

   1 From b7acadaf038740c43515dc1548f43d01cc92823a Mon Sep 17 00:00:00 2001
   2 From: Himanshu Jha <himanshujha199640@gmail.com>
   3 Date: Tue, 9 Jan 2018 02:15:31 +0530
   4 Subject: [PATCH] brcmfmac: Use zeroing memory allocator than allocator/memset
   5
   6 Use dma_zalloc_coherent for allocating zeroed
   7 memory and remove unnecessary memset function.
   8
   9 Generated-by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci
  10
  11 Suggested-by: Luis R. Rodriguez <mcgrof@kernel.org>
  12 Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
  13 Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
  14 ---
  15  .../net/wireless/broadcom/brcm80211/brcmfmac/pcie.c  | 20 ++++++++++----------
  16  1 file changed, 10 insertions(+), 10 deletions(-)
  17
  18 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
  19 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
  20 @@ -1251,14 +1251,14 @@ static int brcmf_pcie_init_scratchbuffer
  21         u64 address;
  22         u32 addr;
  23
  24 -       devinfo->shared.scratch = dma_alloc_coherent(&devinfo->pdev->dev,
  25 -               BRCMF_DMA_D2H_SCRATCH_BUF_LEN,
  26 -               &devinfo->shared.scratch_dmahandle, GFP_KERNEL);
  27 +       devinfo->shared.scratch =
  28 +               dma_zalloc_coherent(&devinfo->pdev->dev,
  29 +                                       BRCMF_DMA_D2H_SCRATCH_BUF_LEN,
  30 +                                       &devinfo->shared.scratch_dmahandle,
  31 +                                       GFP_KERNEL);
  32         if (!devinfo->shared.scratch)
  33                 goto fail;
  34
  35 -       memset(devinfo->shared.scratch, 0, BRCMF_DMA_D2H_SCRATCH_BUF_LEN);
  36 -
  37         addr = devinfo->shared.tcm_base_address +
  38                BRCMF_SHARED_DMA_SCRATCH_ADDR_OFFSET;
  39         address = (u64)devinfo->shared.scratch_dmahandle;
  40 @@ -1268,14 +1268,14 @@ static int brcmf_pcie_init_scratchbuffer
  41                BRCMF_SHARED_DMA_SCRATCH_LEN_OFFSET;
  42         brcmf_pcie_write_tcm32(devinfo, addr, BRCMF_DMA_D2H_SCRATCH_BUF_LEN);
  43
  44 -       devinfo->shared.ringupd = dma_alloc_coherent(&devinfo->pdev->dev,
  45 -               BRCMF_DMA_D2H_RINGUPD_BUF_LEN,
  46 -               &devinfo->shared.ringupd_dmahandle, GFP_KERNEL);
  47 +       devinfo->shared.ringupd =
  48 +               dma_zalloc_coherent(&devinfo->pdev->dev,
  49 +                                       BRCMF_DMA_D2H_RINGUPD_BUF_LEN,
  50 +                                       &devinfo->shared.ringupd_dmahandle,
  51 +                                       GFP_KERNEL);
  52         if (!devinfo->shared.ringupd)
  53                 goto fail;
  54
  55 -       memset(devinfo->shared.ringupd, 0, BRCMF_DMA_D2H_RINGUPD_BUF_LEN);
  56 -
  57         addr = devinfo->shared.tcm_base_address +
  58                BRCMF_SHARED_DMA_RINGUPD_ADDR_OFFSET;
  59         address = (u64)devinfo->shared.ringupd_dmahandle;