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Change #4266

Category None
Changed by Nick Hainke <vincentohnoyoudont@systemli.org>
Changed at Mon 26 Oct 2020 01:35:55
Repository https://git.openwrt.org/openwrt/openwrt.git
Branch master
Revision c9e9b8c342d918cedfc4d2e1c2f7fd1fcaf0b56b


ath79: fix block protection clearing
The block protection bits of macronix do not match the implementation.
The chip has 3 BP bits. Bit 5 is actually the third BP but here the
5th bit is SR_TB. Therefore the patch adds SR_TB to the mask. In the
4.19er kernel the whole register was simply set to 0.

The wrong implementation did not remove the block protection. This led
to jffs2 errors in the form of:
"jffs2: Newly-erased block contained word 0x19852003 at offset 0x..."
This caused inconsistent memory and other errors.

Suggested-by: David Bauer <mail@david-bauer.net>
Signed-off-by: Nick Hainke <vincent@systemli.org>

Changed files