env: make env drivers propagate env_import return value

For multiple env drivers to correctly implement fallback when
one environment fails to load (e.g. crc error), the return value
of env_import has to be propagated by all env driver's load
function.

Without this change, the first driver that succeeds to load an
environment with an invalid CRC return 0 (success) and no other
drivers are checked.

Signed-off-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>

diff --git a/env/eeprom.c b/env/eeprom.c
index 584379e..55d19d9 100644 (file)
--- a/env/eeprom.c
+++ b/env/eeprom.c
@@ -181,9 +181,7 @@ static int env_eeprom_load(void)
        eeprom_bus_read(CONFIG_SYS_DEF_EEPROM_ADDR,
                off, (uchar *)buf_env, CONFIG_ENV_SIZE);
 
-       env_import(buf_env, 1);
-
-       return 0;
+       return env_import(buf_env, 1);
 }
 
 static int env_eeprom_save(void)

diff --git a/env/ext4.c b/env/ext4.c
index 9cdf28e..3f3aac5 100644 (file)
--- a/env/ext4.c
+++ b/env/ext4.c
@@ -114,8 +114,7 @@ static int env_ext4_load(void)
                goto err_env_relocate;
        }
 
-       env_import(buf, 1);
-       return 0;
+       return env_import(buf, 1);
 
 err_env_relocate:
        set_default_env(NULL);

diff --git a/env/fat.c b/env/fat.c
index 158a9a3..35f7ab5 100644 (file)
--- a/env/fat.c
+++ b/env/fat.c
@@ -117,8 +117,7 @@ static int env_fat_load(void)
                goto err_env_relocate;
        }
 
-       env_import(buf, 1);
-       return 0;
+       return env_import(buf, 1);
 
 err_env_relocate:
        set_default_env(NULL);

diff --git a/env/flash.c b/env/flash.c
index bac10ff..ccade77 100644 (file)
--- a/env/flash.c
+++ b/env/flash.c
@@ -351,9 +351,7 @@ static int env_flash_load(void)
                     "reading environment; recovered successfully\n\n");
 #endif /* CONFIG_ENV_ADDR_REDUND */
 
-       env_import((char *)flash_addr, 1);
-
-       return 0;
+       return env_import((char *)flash_addr, 1);
 }
 #endif /* LOADENV */
 

diff --git a/env/mmc.c b/env/mmc.c
index 8847fdc..1058b8c 100644 (file)
--- a/env/mmc.c
+++ b/env/mmc.c
@@ -332,8 +332,7 @@ static int env_mmc_load(void)
                goto fini;
        }
 
-       env_import(buf, 1);
-       ret = 0;
+       ret = env_import(buf, 1);
 
 fini:
        fini_mmc_for_env(mmc);

diff --git a/env/nand.c b/env/nand.c
index 3e8df39..904f1c4 100644 (file)
--- a/env/nand.c
+++ b/env/nand.c
@@ -378,7 +378,7 @@ static int env_nand_load(void)
                return -EIO;
        }
 
-       env_import(buf, 1);
+       return env_import(buf, 1);
 #endif /* ! ENV_IS_EMBEDDED */
 
        return 0;

diff --git a/env/nvram.c b/env/nvram.c
index c8b3475..6f76fe4 100644 (file)
--- a/env/nvram.c
+++ b/env/nvram.c
@@ -60,9 +60,7 @@ static int env_nvram_load(void)
 #else
        memcpy(buf, (void *)CONFIG_ENV_ADDR, CONFIG_ENV_SIZE);
 #endif
-       env_import(buf, 1);
-
-       return 0;
+       return env_import(buf, 1);
 }
 
 static int env_nvram_save(void)

diff --git a/env/remote.c b/env/remote.c
index c013fdd..379d0eb 100644 (file)
--- a/env/remote.c
+++ b/env/remote.c
@@ -49,7 +49,7 @@ static int env_remote_save(void)
 static int env_remote_load(void)
 {
 #ifndef ENV_IS_EMBEDDED
-       env_import((char *)env_ptr, 1);
+       return env_import((char *)env_ptr, 1);
 #endif
 
        return 0;

diff --git a/env/sata.c b/env/sata.c
index a770297..4bfe011 100644 (file)
--- a/env/sata.c
+++ b/env/sata.c
@@ -113,9 +113,7 @@ static void env_sata_load(void)
                return -EIO;
        }
 
-       env_import(buf, 1);
-
-       return 0;
+       return env_import(buf, 1);
 }
 
 U_BOOT_ENV_LOCATION(sata) = {

diff --git a/env/ubi.c b/env/ubi.c
index 72c7a78..d4f4901 100644 (file)
--- a/env/ubi.c
+++ b/env/ubi.c
@@ -163,9 +163,7 @@ static int env_ubi_load(void)
                return -EIO;
        }
 
-       env_import(buf, 1);
-
-       return 0;
+       return env_import(buf, 1);
 }
 #endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */