target/linux/brcm47xx/patches-2.6.35/015-MIPS-BCM47xx-nvram_getenv-fix-return-value.patch

   1 From ff7295cc37b1e4b31aed9f071374f43aa128329b Mon Sep 17 00:00:00 2001
   2 From: Hauke Mehrtens <hauke@hauke-m.de>
   3 Date: Fri, 30 Jul 2010 17:45:20 +0200
   4 Subject: [PATCH 5/6] MIPS: BCM47xx: nvram_getenv fix return value.
   5
   6 nvram_getenv should behave like cfe_getenv. For now it is used like
   7 cfe_getenv. cfe_getenv returns 0 on success and -1 in case of an error.
   8 Change nvram_getenv to do the same.
   9
  10 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  11 ---
  12  arch/mips/bcm47xx/nvram.c                  |    4 ++--
  13  arch/mips/include/asm/mach-bcm47xx/nvram.h |    3 +++
  14  2 files changed, 5 insertions(+), 2 deletions(-)
  15
  16 --- a/arch/mips/bcm47xx/nvram.c
  17 +++ b/arch/mips/bcm47xx/nvram.c
  18 @@ -69,7 +69,7 @@ int nvram_getenv(char *name, char *val,
  19         char *var, *value, *end, *eq;
  20
  21         if (!name)
  22 -               return 1;
  23 +               return NVRAM_ERR_INV_PARAM;
  24
  25         if (!nvram_buf[0])
  26                 early_nvram_init();
  27 @@ -89,6 +89,6 @@ int nvram_getenv(char *name, char *val,
  28                         return 0;
  29                 }
  30         }
  31 -       return 1;
  32 +       return NVRAM_ERR_ENVNOTFOUND;
  33  }
  34  EXPORT_SYMBOL(nvram_getenv);
  35 --- a/arch/mips/include/asm/mach-bcm47xx/nvram.h
  36 +++ b/arch/mips/include/asm/mach-bcm47xx/nvram.h
  37 @@ -31,6 +31,10 @@ struct nvram_header {
  38  #define NVRAM_MAX_VALUE_LEN 255
  39  #define NVRAM_MAX_PARAM_LEN 64
  40
  41 +// TODO: replace by old values. This chaueses that the system will not try to look into the cfe.
  42 +#define NVRAM_ERR_INV_PARAM    1 // -8
  43 +#define NVRAM_ERR_ENVNOTFOUND  1 // -9
  44 +
  45  extern int nvram_getenv(char *name, char *val, size_t val_len);
  46
  47  #endif