This is a note to let you know that I've just added the patch titled mtd: parsers: bcm47xxpart: Fix halfblock reads to the 6.0-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mtd-parsers-bcm47xxpart-fix-halfblock-reads.patch and it can be found in the queue-6.0 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 05e258c6ec669d6d18c494ea03d35962d6f5b545 Mon Sep 17 00:00:00 2001 From: Linus Walleij <linus.walleij@xxxxxxxxxx> Date: Tue, 18 Oct 2022 11:11:29 +0200 Subject: mtd: parsers: bcm47xxpart: Fix halfblock reads MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Linus Walleij <linus.walleij@xxxxxxxxxx> commit 05e258c6ec669d6d18c494ea03d35962d6f5b545 upstream. There is some code in the parser that tries to read 0x8000 bytes into a block to "read in the middle" of the block. Well that only works if the block is also 0x10000 bytes all the time, else we get these parse errors as we reach the end of the flash: spi-nor spi0.0: mx25l1606e (2048 Kbytes) mtd_read error while parsing (offset: 0x200000): -22 mtd_read error while parsing (offset: 0x201000): -22 (...) Fix the code to do what I think was intended. Cc: stable@xxxxxxxxxxxxxxx Fixes: f0501e81fbaa ("mtd: bcm47xxpart: alternative MAGIC for board_data partition") Cc: Rafał Miłecki <zajec5@xxxxxxxxx> Cc: Florian Fainelli <f.fainelli@xxxxxxxxx> Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx> Link: https://lore.kernel.org/linux-mtd/20221018091129.280026-1-linus.walleij@xxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/mtd/parsers/bcm47xxpart.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/mtd/parsers/bcm47xxpart.c +++ b/drivers/mtd/parsers/bcm47xxpart.c @@ -233,11 +233,11 @@ static int bcm47xxpart_parse(struct mtd_ } /* Read middle of the block */ - err = mtd_read(master, offset + 0x8000, 0x4, &bytes_read, + err = mtd_read(master, offset + (blocksize / 2), 0x4, &bytes_read, (uint8_t *)buf); if (err && !mtd_is_bitflip(err)) { pr_err("mtd_read error while parsing (offset: 0x%X): %d\n", - offset + 0x8000, err); + offset + (blocksize / 2), err); continue; } Patches currently in stable-queue which might be from linus.walleij@xxxxxxxxxx are queue-6.0/mtd-parsers-bcm47xxpart-fix-halfblock-reads.patch