env: clean env_mmc.c checkpatch and code style

Cleanup the env_mmc.c checkpatch warnings, errors and coding style.
Simplify env_relocate_spec() function implementation.
Also mark internal functions as static.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>

common/env_mmc.c

@@ -37,14 +37,9 @@ char *env_name_spec = "MMC";
 #ifdef ENV_IS_EMBEDDED
 env_t *env_ptr = &environment;
 #else /* ! ENV_IS_EMBEDDED */
-env_t *env_ptr = NULL;
+env_t *env_ptr;
 #endif /* ENV_IS_EMBEDDED */
 
-/* local functions */
-#if !defined(ENV_IS_EMBEDDED)
-static void use_default(void);
-#endif
-
 DECLARE_GLOBAL_DATA_PTR;
 
 #if !defined(CONFIG_ENV_OFFSET)
@@ -56,9 +51,8 @@ static int __mmc_get_env_addr(struct mmc *mmc, u32 *env_addr)
 	*env_addr = CONFIG_ENV_OFFSET;
 	return 0;
 }
-__attribute__((weak, alias("__mmc_get_env_addr")))
-int mmc_get_env_addr(struct mmc *mmc, u32 *env_addr);
-
+int mmc_get_env_addr(struct mmc *mmc, u32 *env_addr)
+	__attribute__((weak, alias("__mmc_get_env_addr")));
 
 uchar env_get_char_spec(int index)
 {
@@ -74,7 +68,7 @@ int env_init(void)
 	return 0;
 }
 
-int init_mmc_for_env(struct mmc *mmc)
+static int init_mmc_for_env(struct mmc *mmc)
 {
 	if (!mmc) {
 		puts("No MMC card found\n");
@@ -90,8 +84,7 @@ int init_mmc_for_env(struct mmc *mmc)
 }
 
 #ifdef CONFIG_CMD_SAVEENV
-
-inline int write_env(struct mmc *mmc, unsigned long size,
+static inline int write_env(struct mmc *mmc, unsigned long size,
 			    unsigned long offset, const void *buffer)
 {
 	uint blk_start, blk_cnt, n;
@@ -113,10 +106,7 @@ int saveenv(void)
 	struct mmc *mmc = find_mmc_device(CONFIG_SYS_MMC_ENV_DEV);
 	u32	offset;
 
-	if (init_mmc_for_env(mmc))
-		return 1;
-
-	if(mmc_get_env_addr(mmc, &offset))
+	if (init_mmc_for_env(mmc) || mmc_get_env_addr(mmc, &offset))
 		return 1;
 
 	res = (char *)&env_new.data;
@@ -125,6 +115,7 @@ int saveenv(void)
 		error("Cannot export environment: errno = %d\n", errno);
 		return 1;
 	}
+
 	env_new.crc = crc32(0, env_new.data, ENV_SIZE);
 	printf("Writing to MMC(%d)... ", CONFIG_SYS_MMC_ENV_DEV);
 	if (write_env(mmc, CONFIG_ENV_SIZE, offset, (u_char *)&env_new)) {
@@ -137,7 +128,7 @@ int saveenv(void)
 }
 #endif /* CONFIG_CMD_SAVEENV */
 
-inline int read_env(struct mmc *mmc, unsigned long size,
+static inline int read_env(struct mmc *mmc, unsigned long size,
 			   unsigned long offset, const void *buffer)
 {
 	uint blk_start, blk_cnt, n;
@@ -155,32 +146,15 @@ void env_relocate_spec(void)
 {
 #if !defined(ENV_IS_EMBEDDED)
 	char buf[CONFIG_ENV_SIZE];
-
 	struct mmc *mmc = find_mmc_device(CONFIG_SYS_MMC_ENV_DEV);
 	u32 offset;
 
-	if (init_mmc_for_env(mmc)) {
-		use_default();
-		return;
-	}
+	if (init_mmc_for_env(mmc) || mmc_get_env_addr(mmc, &offset))
+		return set_default_env(NULL);
 
-	if(mmc_get_env_addr(mmc, &offset)) {
-		use_default();
-		return ;
-	}
-
-	if (read_env(mmc, CONFIG_ENV_SIZE, offset, buf)) {
-		use_default();
-		return;
-	}
+	if (read_env(mmc, CONFIG_ENV_SIZE, offset, buf))
+		return set_default_env(NULL);
 
 	env_import(buf, 1);
 #endif
 }
-
-#if !defined(ENV_IS_EMBEDDED)
-static void use_default()
-{
-	set_default_env(NULL);
-}
-#endif