target/linux/layerscape/patches-5.4/701-net-0399-staging-fsl_ppfe-eth-Enhance-error-checking-in-platf.patch

   1 From 1ccc18ca96d8a824f2af45d1046d23ccdb90f3df Mon Sep 17 00:00:00 2001
   2 From: Anji Jagarlmudi <anji.jagarlmudi@nxp.com>
   3 Date: Wed, 8 Jan 2020 12:18:40 +0530
   4 Subject: [PATCH] staging: fsl_ppfe/eth: Enhance error checking in platform
   5  probe
   6
   7 Fix the kernel crash when MAC addr is not passed in dtb.
   8
   9 Signed-off-by: Anji Jagarlmudi <anji.jagarlmudi@nxp.com>
  10 ---
  11  drivers/staging/fsl_ppfe/pfe_ls1012a_platform.c | 10 +++++++---
  12  1 file changed, 7 insertions(+), 3 deletions(-)
  13
  14 --- a/drivers/staging/fsl_ppfe/pfe_ls1012a_platform.c
  15 +++ b/drivers/staging/fsl_ppfe/pfe_ls1012a_platform.c
  16 @@ -29,15 +29,19 @@ static int pfe_get_gemac_if_properties(s
  17         int size;
  18         int phy_id = 0;
  19         const u32 *addr;
  20 -       const void *mac_addr;
  21 +       const u8 *mac_addr;
  22
  23         addr = of_get_property(gem, "reg", &size);
  24 -       port = be32_to_cpup(addr);
  25 +       if (addr)
  26 +               port = be32_to_cpup(addr);
  27 +       else
  28 +               goto err;
  29 +
  30
  31         pdata->ls1012a_eth_pdata[port].gem_id = port;
  32
  33         mac_addr = of_get_mac_address(gem);
  34 -       if (mac_addr) {
  35 +       if (!IS_ERR_OR_NULL(mac_addr)) {
  36                 memcpy(pdata->ls1012a_eth_pdata[port].mac_addr, mac_addr,
  37                        ETH_ALEN);
  38         }