env: Adjust the load() method to return an error

The load() methods have inconsistent behaviour on error. Some of them load
an empty default environment. Some load an environment containing an error
message. Others do nothing.

As a step in the right direction, have the method return an error code.
Then the caller could handle this itself in a consistent way.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/env/fat.c b/env/fat.c
index a5a156c88b..ec49c39053 100644
--- a/env/fat.c
+++ b/env/fat.c
@@ -74,7 +74,7 @@ static int env_fat_save(void)
 #endif /* CMD_SAVEENV */
 
 #ifdef LOADENV
-static void env_fat_load(void)
+static int env_fat_load(void)
 {
 	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
 	struct blk_desc *dev_desc = NULL;
@@ -103,10 +103,12 @@ static void env_fat_load(void)
 	}
 
 	env_import(buf, 1);
-	return;
+	return 0;
 
 err_env_relocate:
 	set_default_env(NULL);
+
+	return -EIO;
 }
 #endif /* LOADENV */