Currently, we assume that if we can read from MMC correctly, we have
found a valid image.  This is not the case as an empty area will read
just fine.  Add a check for a valid IH_MAGIC.

Signed-off-by: Tom Rini <tr...@ti.com>
---
 common/spl/spl_mmc.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/common/spl/spl_mmc.c b/common/spl/spl_mmc.c
index 170fa38..d20f45d 100644
--- a/common/spl/spl_mmc.c
+++ b/common/spl/spl_mmc.c
@@ -29,6 +29,7 @@
 #include <mmc.h>
 #include <fat.h>
 #include <version.h>
+#include <image.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -46,6 +47,9 @@ static int mmc_load_image_raw(struct mmc *mmc, unsigned long 
sector)
        if (err == 0)
                goto end;
 
+       if (image_get_magic(header) != IH_MAGIC)
+               return -1;
+
        spl_parse_image_header(header);
 
        /* convert size to sectors - round up */
-- 
1.7.9.5

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