Occasional mmc0 timeout on 2.6.25 master kernels

[Denver Gingerich]

When booting 2.6.25 master kernels (specifically seen on 20080501.2
and 20080501.3) from an SD card, the following error occurs every 5th
boot or so:

[ 3.512185] Waiting 2sec before mounting root device...
[ 5.574603] VFS: Cannot open root device "mmcblk0p1" or unknown-block(0,0)
[ 5.577210] Please append a correct "root=" boot option; here are the
available partitions:
...
[ 5.747213] Kernel panic - not syncing: VFS: Unable to mount root fs
on unknown-block(0,0)
[13.597220] mmc0: Timeout waiting for hardware interrupt.

I have never encountered this error using 2.6.22-20071121.7 with over 50 boots.

Denver