block_dev_desc_t *dev_desc = NULL;
        int dev = FAT_ENV_DEVICE;
        int part = FAT_ENV_PART;
+       int err;
 
        res = (char *)&env_new.data;
        len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
        }
 
 #ifdef CONFIG_MMC
-       if (strcmp (FAT_ENV_INTERFACE, "mmc") == 0) {
+       if (strcmp(FAT_ENV_INTERFACE, "mmc") == 0) {
                struct mmc *mmc = find_mmc_device(dev);
 
                if (!mmc) {
                        FAT_ENV_INTERFACE, dev);
                return 1;
        }
-       if (fat_register_device(dev_desc, part) != 0) {
+
+       err = fat_register_device(dev_desc, part);
+       if (err) {
                printf("Failed to register %s%d:%d\n",
                        FAT_ENV_INTERFACE, dev, part);
                return 1;
        }
 
        env_new.crc = crc32(0, env_new.data, ENV_SIZE);
-       if (file_fat_write(FAT_ENV_FILE, (void *)&env_new, sizeof(env_t)) == -1) {
+       err = file_fat_write(FAT_ENV_FILE, (void *)&env_new, sizeof(env_t));
+       if (err == -1) {
                printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
                        FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part);
                return 1;
        block_dev_desc_t *dev_desc = NULL;
        int dev = FAT_ENV_DEVICE;
        int part = FAT_ENV_PART;
+       int err;
 
 #ifdef CONFIG_MMC
-       if (strcmp (FAT_ENV_INTERFACE, "mmc") == 0) {
+       if (strcmp(FAT_ENV_INTERFACE, "mmc") == 0) {
                struct mmc *mmc = find_mmc_device(dev);
 
                if (!mmc) {
                set_default_env(NULL);
                return;
        }
-       if (fat_register_device(dev_desc, part) != 0) {
+
+       err = fat_register_device(dev_desc, part);
+       if (err) {
                printf("Failed to register %s%d:%d\n",
                        FAT_ENV_INTERFACE, dev, part);
                set_default_env(NULL);
                return;
        }
 
-       if (file_fat_read(FAT_ENV_FILE, (unsigned char *)&buf, CONFIG_ENV_SIZE) == -1) {
+       err = file_fat_read(FAT_ENV_FILE, (uchar *)&buf, CONFIG_ENV_SIZE);
+       if (err == -1) {
                printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
                        FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part);
                set_default_env(NULL);