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update_kernel: fix to be not rely on kernel command-line

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This script recently stopped working when we changed the kernel cmdline.

Fix to be more robust by using rootdev instead.

BUG=12780
TEST=Updated my kernel.

Change-Id: I033f670c5db821863441ea1546c382fce3436c01

Review URL: http://codereview.chromium.org/6628027
This commit is contained in:
Mandeep Singh Baines 2011-03-04 15:58:57 -08:00
parent b54301bb9a
commit e39579a9d0
1 changed files with 6 additions and 2 deletions
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8
update_kernel.sh
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@ -62,8 +62,12 @@ function learn_device() {
# Ask the target what the kernel partition is # Ask the target what the kernel partition is
function learn_partition() { function learn_partition() {
[ -n "${FLAGS_partition}" ] && return [ -n "${FLAGS_partition}" ] && return
remote_sh cat /proc/cmdline ! remote_sh rootdev
if echo "${REMOTE_OUT}" | egrep -q "${FLAGS_device}3"; then if [ "${REMOTE_OUT}" == "/dev/dm-0" ]; then
remote_sh ls /sys/block/dm-0/slaves
REMOTE_OUT="/dev/${REMOTE_OUT}"
fi
if [ "${REMOTE_OUT}" == "${FLAGS_device}3" ]; then
FLAGS_partition="${FLAGS_device}2" FLAGS_partition="${FLAGS_device}2"
else else
FLAGS_partition="${FLAGS_device}4" FLAGS_partition="${FLAGS_device}4"