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Message-ID: <YhZ0vZxlp1VTgNG8@kroah.com> Date: Wed, 23 Feb 2022 18:54:05 +0100 From: Greg KH <gregkh@...uxfoundation.org> To: Florian Fainelli <f.fainelli@...il.com> Cc: stable@...r.kernel.org, sashal@...nel.org, david regan <dregan@...l.com>, Miquel Raynal <miquel.raynal@...tlin.com>, Richard Weinberger <richard@....at>, Vignesh Raghavendra <vigneshr@...com>, Brian Norris <computersforpeace@...il.com>, "open list:NAND FLASH SUBSYSTEM" <linux-mtd@...ts.infradead.org>, open list <linux-kernel@...r.kernel.org> Subject: Re: [PATCH RESEND stable 4.9] mtd: rawnand: brcmnand: Fixed incorrect sub-page ECC status On Wed, Feb 23, 2022 at 09:44:31AM -0800, Florian Fainelli wrote: > From: david regan <dregan@...l.com> > > commit 36415a7964711822e63695ea67fede63979054d9 upstream > > The brcmnand driver contains a bug in which if a page (example 2k byte) > is read from the parallel/ONFI NAND and within that page a subpage (512 > byte) has correctable errors which is followed by a subpage with > uncorrectable errors, the page read will return the wrong status of > correctable (as opposed to the actual status of uncorrectable.) > > The bug is in function brcmnand_read_by_pio where there is a check for > uncorrectable bits which will be preempted if a previous status for > correctable bits is detected. > > The fix is to stop checking for bad bits only if we already have a bad > bits status. > > Fixes: 27c5b17cd1b1 ("mtd: nand: add NAND driver "library" for Broadcom STB NAND controller") > Signed-off-by: david regan <dregan@...l.com> > Reviewed-by: Florian Fainelli <f.fainelli@...il.com> > Signed-off-by: Miquel Raynal <miquel.raynal@...tlin.com> > Link: https://lore.kernel.org/linux-mtd/trinity-478e0c09-9134-40e8-8f8c-31c371225eda-1643237024774@3c-app-mailcom-lxa02 > [florian: make patch apply to 4.14, file was renamed] > Signed-off-by: Florian Fainelli <f.fainelli@...il.com> > --- > drivers/mtd/nand/brcmnand/brcmnand.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) Why is this a RESEND? What happened with the first set? thanks, greg k-h
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