MMC: commit dba3c29 ruins mmc card data on beagle-xm revB

[S, Venkatraman]

On Mon, Jun 11, 2012 at 12:50 PM, Ming Lei <ming.lei at canonical.com> wrote:
> On Mon, Jun 11, 2012 at 2:21 PM, T Krishnamoorthy, Balaji
> <balajitk at ti.com> wrote:
>> Hi Ming Lei,
>> Can you let me know if you noticed any write/timeout errors ?
>
> Nothing error logs found during writing.
>
> Below is one of my test case.
>
> root at beagleboard:~# upk
> updateing kernel...
> flush storage...
> root at beagleboard:~# cat bin/upk
> #!/bin/sh
>
> echo "updateing kernel..."
> cp -f /mnt/nfs/t/uImage /media/mmcblk0p1/
>
> echo "flush storage..."
> sync
> root at beagleboard:~# diff /mnt/nfs/t/uImage /media/mmcblk0p1/uImage
> Binary files /mnt/nfs/t/uImage and /media/mmcblk0p1/uImage differ
> root at beagleboard:~# umount /media/mmcblk0p1
> root at beagleboard:~# mount -t vfat /dev/mmcblk0p1 /media/mmcblk0p1
> root at beagleboard:~#
> root at beagleboard:~#
> root at beagleboard:~# diff /mnt/nfs/t/uImage /media/mmcblk0p1/uImage
> Binary files /mnt/nfs/t/uImage and /media/mmcblk0p1/uImage differ
>
Ming,
  Just to keep you posted, Balaji and myself are trying to reproduce
the issue and haven't hit the problem yet.
This patch was in use internaly for sometime before we sent it upstream.
Meanwhile, is is possible for you to reproduce this problem with
MMC_DEBUG enabled ? That would be helpful.
~Venkat.