[LEDE-DEV] [PATCH] ar71xx: Fix sysupgrade for the Airtight Networks C-55

[Chris Blake]

It appears that $$$$(KERNEL_SIZE) was not passing to append-kernel,
causing sysupgrade images to brick units due to the invalid rootfs
offset. This is fixed by removing the 2 extra $$'s in front of the
variables. Additionally, check-size was added to ensure that we don't
have a kernel larger than our partition.

Before: kernel at 0x0,rootfs at 0x13EDF8
After: kernel at 0x0,rootfs at 0x200000

Signed-off-by: Chris Blake <chrisrblake93 at gmail.com>
---
 target/linux/ar71xx/image/generic.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/linux/ar71xx/image/generic.mk b/target/linux/ar71xx/image/generic.mk
index bd92a84..5144334 100644
--- a/target/linux/ar71xx/image/generic.mk
+++ b/target/linux/ar71xx/image/generic.mk
@@ -443,7 +443,7 @@ define Device/c-55
   KERNEL_SIZE = 2048k
   IMAGE_SIZE = 15872k
   MTDPARTS = spi0.0:256k(u-boot)ro,128k(u-boot-env)ro,2048k(kernel),13824k(rootfs),13824k(opt)ro,2624k(failsafe)ro,64k(art)ro,15872k at 0x60000(firmware)
-  IMAGE/sysupgrade.bin = append-kernel $$$$(KERNEL_SIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.bin = append-kernel $$(KERNEL_SIZE) | check-size $$(KERNEL_SIZE) | append-rootfs | pad-rootfs | check-size $$(IMAGE_SIZE)
 endef
 
 TARGET_DEVICES += c-55
-- 
2.7.4