disk: allow - or empty string to fall back to $bootdevice
authorStephen Warren <swarren@nvidia.com>
Fri, 28 Sep 2012 05:34:09 +0000 (05:34 +0000)
committerTom Rini <trini@ti.com>
Fri, 28 Sep 2012 16:15:35 +0000 (09:15 -0700)
commita10973e7fac1e0338c9c0bb79ae114d869b6200f
tree5b974c9e015021aa8da82eb572e653830977d689
parentcec2655c3b3b86f14a6a5c2cbb01833f7e3974be
disk: allow - or empty string to fall back to $bootdevice

Commit 10a37fd "disk: get_device_and_partition() "auto" partition"
prevented the use of "-" on the command-line to request fallback to the
$bootdevice environment variable instead. This patch allows that, or an
empty string "" to be used.

Tested:
setenv bootfile /boot/zImage
setenv bootdevice 0:1
ext2load mmc 0:1
ext2load mmc -
ext2load mmc ""

Signed-off-by: Stephen Warren <swarren@nvidia.com>
disk/part.c