target/linux/apm821xx/patches-4.14/022-0001-crypto-Use-zeroing-memory-allocator-instead-of-alloc.patch

   1 From 75d68369b544acc5d14c18a827654dfff248d09d Mon Sep 17 00:00:00 2001
   2 From: Himanshu Jha <himanshujha199640@gmail.com>
   3 Date: Sun, 31 Dec 2017 17:54:23 +0530
   4 Subject: [PATCH 1/8] crypto: Use zeroing memory allocator instead of
   5  allocator/memset
   6
   7 Use dma_zalloc_coherent for allocating zeroed
   8 memory and remove unnecessary memset function.
   9
  10 Done using Coccinelle.
  11 Generated-by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci
  12 0-day tested with no failures.
  13
  14 Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
  15 Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
  16 ---
  17  drivers/crypto/amcc/crypto4xx_core.c | 8 +++-----
  18  1 file changed, 3 insertions(+), 5 deletions(-)
  19
  20 --- a/drivers/crypto/amcc/crypto4xx_core.c
  21 +++ b/drivers/crypto/amcc/crypto4xx_core.c
  22 @@ -282,14 +282,12 @@ static u32 crypto4xx_put_pd_to_pdr(struc
  23   */
  24  static u32 crypto4xx_build_gdr(struct crypto4xx_device *dev)
  25  {
  26 -       dev->gdr = dma_alloc_coherent(dev->core_dev->device,
  27 -                                     sizeof(struct ce_gd) * PPC4XX_NUM_GD,
  28 -                                     &dev->gdr_pa, GFP_ATOMIC);
  29 +       dev->gdr = dma_zalloc_coherent(dev->core_dev->device,
  30 +                                      sizeof(struct ce_gd) * PPC4XX_NUM_GD,
  31 +                                      &dev->gdr_pa, GFP_ATOMIC);
  32         if (!dev->gdr)
  33                 return -ENOMEM;
  34
  35 -       memset(dev->gdr, 0, sizeof(struct ce_gd) * PPC4XX_NUM_GD);
  36 -
  37         return 0;
  38  }
  39