linux-kernel - Re: [PATCH v2 2/2] mtd: rawnand: brcmnand: ECC error handling on EDU transfers

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Message-Id: <20200615085925.22266-1-miquel.raynal@bootlin.com>
Date:   Mon, 15 Jun 2020 10:59:25 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Kamal Dasu <kdasu.kdev@...il.com>, computersforpeace@...il.com,
        miquel.raynal@...tlin.com, richard@....at, vigneshr@...com
Cc:     bcm-kernel-feedback-list@...adcom.com,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] mtd: rawnand: brcmnand: ECC error handling on EDU transfers

On Fri, 2020-06-12 at 21:29:02 UTC, Kamal Dasu wrote:
> Implement ECC correctable and uncorrectable error handling for EDU
> reads. If ECC correctable bitflips are encountered on EDU transfer,
> read page again using PIO. This is needed due to a NAND controller
> limitation where corrected data is not transferred to the DMA buffer
> on ECC error. This applies to ECC correctable errors that are reported
> by the controller hardware based on set number of bitflips threshold in
> the controller threshold register, bitflips below the threshold are
> corrected silently and are not reported by the controller hardware.
> 
> Fixes: a5d53ad26a8b ("mtd: rawnand: brcmnand: Add support for flash-edu for dma transfers")
> Signed-off-by: Kamal Dasu <kdasu.kdev@...il.com>

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git nand/next, thanks.

Miquel