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mediatek: make sure MMC is not busy before commencing sysupgrade

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In case of the block device still being in use, re-reading the
partition table fails. In that case, abort sysupgrade to avoid
corrupting the just-written image because of wrong offsets caused
by failure to re-read the partition table.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This commit is contained in:
Daniel Golle 2021-10-27 15:30:39 +01:00
parent b2aca61360
commit 4ae4035e60
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2 changed files with 2 additions and 0 deletions
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1
target/linux/mediatek/mt7622/base-files/lib/upgrade/platform.sh
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@ -12,6 +12,7 @@ platform_do_upgrade() {
export_partdevice rootdev 0
case "$rootdev" in
mmc*)
blockdev --rereadpt /dev/$rootdev || return 1
local fitpart=$(get_partition_by_name $rootdev "production")
[ "$fitpart" ] || return 1
dd if=/dev/zero of=/dev/$fitpart bs=4096 count=1 2>/dev/null

1
target/linux/mediatek/mt7623/base-files/lib/upgrade/platform.sh
View File

@ -86,6 +86,7 @@ platform_do_upgrade() {
bananapi,bpi-r2)
export_bootdevice
export_partdevice rootdev 0
blockdev --rereadpt /dev/$rootdev || return 1
export_partdevice fitpart 3
[ "$fitpart" ] || return 1
dd if=/dev/zero of=/dev/$fitpart bs=4096 count=1 2>/dev/null