This is a note to let you know that I've just added the patch titled
mtd: nand: brcmnand: Zero bitflip is not an error
to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: mtd-nand-brcmnand-zero-bitflip-is-not-an-error.patch and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Wed Feb 28 16:13:29 CET 2018
From: Albert Hsieh wen.hsieh@broadcom.com Date: Mon, 20 Nov 2017 11:26:26 +0800 Subject: mtd: nand: brcmnand: Zero bitflip is not an error
From: Albert Hsieh wen.hsieh@broadcom.com
[ Upstream commit e44b9a9c135727f3410e029910275f40681dc8bc ]
A negative return value of brcmstb_nand_verify_erased_page() indicates a real bitflip error of an erased page, and other return values (>= 0) show the corrected bitflip number. Zero return value means no bitflip, but the current driver code treats it as an error, and eventually leads to falsely reported ECC error.
Fixes: 02b88eea9f9c ("mtd: brcmnand: Add check for erased page bitflip") Signed-off-by: Albert Hsieh wen.hsieh@broadcom.com Acked-by: Boris Brezillon boris.brezillon@free-electrons.com Signed-off-by: Richard Weinberger richard@nod.at Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/mtd/nand/brcmnand/brcmnand.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/mtd/nand/brcmnand/brcmnand.c +++ b/drivers/mtd/nand/brcmnand/brcmnand.c @@ -1763,7 +1763,7 @@ try_dmaread: err = brcmstb_nand_verify_erased_page(mtd, chip, buf, addr); /* erased page bitflips corrected */ - if (err > 0) + if (err >= 0) return err; }
Patches currently in stable-queue which might be from wen.hsieh@broadcom.com are
queue-4.9/mtd-nand-brcmnand-zero-bitflip-is-not-an-error.patch