ramips: fix Netgear EX2700 images

The previous image creation code would have failed if the
unpadded kernel uImage size was less than 64 bytes from the
next erase block boundary. Fix that.

Signed-off-by: Joseph C. Lehner <joseph.c.lehner@gmail.com>

diff --git a/target/linux/ramips/image/mt7620.mk b/target/linux/ramips/image/mt7620.mk
index d7acb1b8f97648f496ce069bb5064d02c0aaedc8..d6da803b525dfe0f69a8284bf0861e4a1126bd1e 100644 (file)
--- a/target/linux/ramips/image/mt7620.mk
+++ b/target/linux/ramips/image/mt7620.mk
@@ -8,8 +8,9 @@ define Build/tplink-header
 endef
 
 define Build/pad-kernel-ex2700
-       dd if=$@ of=$@.new bs=64k conv=sync && truncate -s -64 $@.new \
-               && cat ex2700-fakeroot.uImage >> $@.new && mv $@.new $@
+       dd if=/dev/zero of=$@.pad bs=64 count=1 && cat $@ $@.pad \
+               | dd of=$@.new bs=64k conv=sync && truncate -s -64 $@.new \
+               && cat ex2700-fakeroot.uImage >> $@.new && rm $@.pad && mv $@.new $@
 endef
 
 define Build/netgear-header