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ramips: EAP615-Wall v1: fix bootloop by reducing LZMA dictionary 

Fix bootloop on TP-Link EAP615-Wall v1 by reducing LZMA dictionary
size. Before this patch and after an upgrade to kernel 6.12 this
device couldn't boot a kernel because of an error: "lzma compressed:
uncompress error 1".

I have chosen -d22 as dictionary size as suggested by @namiltd.
The usual sizes for problematic devices are -d16, -d20, -d22. I
have confirmed with my tests that this device can boot with a value
up to -d27, but there is no size benefit from values above -d21,
therefore -d22 is good enough.

See also: https://github.com/openwrt/openwrt/issues/19403

Signed-off-by: Marcin FM <marcin@ipv8.pl>
Link: https://github.com/openwrt/openwrt/pull/19433
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Marcin FM 2025-07-16 12:43:12 +02:00 committed by Hauke Mehrtens
parent aea6d1bf5e
commit 28a88ff7e6
1 changed files with 2 additions and 2 deletions
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4
target/linux/ramips/image/mt7621.mk
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@ -2824,8 +2824,8 @@ define Device/tplink_eap615-wall-v1
DEVICE_VARIANT := v1
DEVICE_PACKAGES := kmod-mt7915-firmware -uboot-envtools
TPLINK_BOARD_ID := EAP615-WALL-V1
KERNEL := kernel-bin | lzma | fit lzma $$(KDIR)/image-$$(firstword $$(DEVICE_DTS)).dtb | pad-to 64k
KERNEL_INITRAMFS := kernel-bin | lzma | fit lzma $$(KDIR)/image-$$(firstword $$(DEVICE_DTS)).dtb with-initrd
KERNEL := kernel-bin | lzma -d22 | fit lzma $$(KDIR)/image-$$(firstword $$(DEVICE_DTS)).dtb | pad-to 64k
KERNEL_INITRAMFS := kernel-bin | lzma -d22 | fit lzma $$(KDIR)/image-$$(firstword $$(DEVICE_DTS)).dtb with-initrd
IMAGE_SIZE := 13248k
endef
TARGET_DEVICES += tplink_eap615-wall-v1