env_mmc: fix cannot save env issue

[karo-tx-uboot.git] / common / env_mmc.c

diff --git a/common/env_mmc.c b/common/env_mmc.c
index cc288d487c2e0d7d05df001154d1e4470d47fb74..dcab994e5dccb8fca93472bdb2e1fabf7ba21e27 100644 (file)
--- a/common/env_mmc.c
+++ b/common/env_mmc.c
@@ -29,6 +29,7 @@
 #include <linux/stddef.h>
 #include <malloc.h>
 #include <mmc.h>
+#include <errno.h>
 
 /* references to names in env_common.c */
 extern uchar default_environment[];
@@ -96,13 +97,23 @@ inline int write_env(struct mmc *mmc, unsigned long size,
 
 int saveenv(void)
 {
+       env_t   env_new;
+       ssize_t len;
+       char    *res;
        struct mmc *mmc = find_mmc_device(CONFIG_SYS_MMC_ENV_DEV);
 
        if (init_mmc_for_env(mmc))
                return 1;
 
+       res = (char *)&env_new.data;
+       len = hexport('\0', &res, ENV_SIZE);
+       if (len < 0) {
+               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, CONFIG_ENV_OFFSET, env_ptr)) {
+       if (write_env(mmc, CONFIG_ENV_SIZE, CONFIG_ENV_OFFSET, (u_char *)&env_new)) {
                puts("failed\n");
                return 1;
        }