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-rw-r--r--target/linux/ath79/mikrotik/base-files/lib/functions/mikrotik-caldata.sh9
1 files changed, 7 insertions, 2 deletions
diff --git a/target/linux/ath79/mikrotik/base-files/lib/functions/mikrotik-caldata.sh b/target/linux/ath79/mikrotik/base-files/lib/functions/mikrotik-caldata.sh
index 9c4016ee5d..71a1bf02f3 100644
--- a/target/linux/ath79/mikrotik/base-files/lib/functions/mikrotik-caldata.sh
+++ b/target/linux/ath79/mikrotik/base-files/lib/functions/mikrotik-caldata.sh
@@ -9,13 +9,18 @@ mikrotik_caldata_extract() {
local offset=$(($2))
local count=$(($3))
local mtd
- local erdfile="/lib/firmware/erd.bin"
+ local erdfile="/tmp/erd.bin"
+ local fwfile="/lib/firmware/${FIRMWARE}"
+
+ [ -e $fwfile ] && exit 0
mtd=$(find_mtd_chardev $part)
[ -n "$mtd" ] || caldata_die "no mtd device found for partition $part"
rbextract -e $mtd $erdfile
- dd if=$erdfile of=/lib/firmware/$FIRMWARE iflag=skip_bytes bs=$count skip=$offset count=1 2>/dev/null || \
+ dd if=$erdfile of=$fwfile iflag=skip_bytes bs=$count skip=$offset count=1 2>/dev/null || \
caldata_die "failed to extract calibration data from $mtd"
+
+ rm -f $erdfile
}