target/linux/layerscape/patches-5.4/701-net-0028-sdk_dpaa-avoid-crashing-on-OOM.patch

   1 From 8254c87e00992f6b14472076f435cba52ad9ff9d Mon Sep 17 00:00:00 2001
   2 From: Madalin Bucur <madalin.bucur@nxp.com>
   3 Date: Thu, 31 Aug 2017 17:42:07 +0300
   4 Subject: [PATCH] sdk_dpaa: avoid crashing on OOM
   5
   6 Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com>
   7 ---
   8  drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c | 8 ++++++--
   9  1 file changed, 6 insertions(+), 2 deletions(-)
  10
  11 --- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
  12 +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
  13 @@ -100,8 +100,12 @@ static int _dpa_bp_add_8_bufs(const stru
  14                  * an entire cacheline for performance reasons.
  15                  */
  16  #ifndef CONFIG_PPC
  17 -               if (unlikely(dpaa_errata_a010022))
  18 -                       new_buf = page_address(alloc_page(GFP_ATOMIC));
  19 +               if (unlikely(dpaa_errata_a010022)) {
  20 +                       struct page *new_page = alloc_page(GFP_ATOMIC);
  21 +                       if (unlikely(!new_page))
  22 +                               goto netdev_alloc_failed;
  23 +                       new_buf = page_address(new_page);
  24 +               }
  25                 else
  26  #endif
  27                 new_buf = netdev_alloc_frag(SMP_CACHE_BYTES + DPA_BP_RAW_SIZE);