[U-Boot] [U-Boot, PATCH 1/1] mmc: emmc and hw partitions partition table id bugfix.

[Erik Tideman]

On bootup the emmc's hw partition is always set to 0 and the partition 
table is read from it. When switching to another hw partition the 
partition table's id is not updated but instead the old one from 
hw partition 0 is used. If there is no partition table on hw partition 0
then the code will terminate and return error even if the desired hw 
partition contains a perfectly fine partition table. This fix updates 
the partition table struct to correspond to the specified hw partition 
before testing if the partition table is valid or not.

Signed-off-by: Erik Tideman <erik.tideman at faltcom.se>
---
 disk/part.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/disk/part.c b/disk/part.c
index 909712e..70a38c2 100644
--- a/disk/part.c
+++ b/disk/part.c
@@ -493,6 +493,14 @@ int get_device(const char *ifname, const char *dev_hwpart_str,
 		goto cleanup;
 	}
 
+    /*
+    * Updates the partition table for the specified hw partition.
+    * Does not need to be done for hwpart 0 since it is default and
+    * already loaded.
+    */
+	if(hwpart != 0)
+        init_part(*dev_desc);
+
 cleanup:
 	free(dup_str);
 	return dev;
-- 
2.5.0