linux-kernel - Re: [PATCH] mtd: rawnand: qcom: Fix DMA sync on FLASH

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Message-Id: <20201030172738.29290-1-miquel.raynal@bootlin.com>
Date:   Fri, 30 Oct 2020 18:27:38 +0100
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Praveenkumar I <ipkumar@...eaurora.org>, miquel.raynal@...tlin.com,
        richard@....at, vigneshr@...com, sivaprak@...eaurora.org,
        peter.ujfalusi@...com, boris.brezillon@...labora.com,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     kathirav@...eaurora.org, stable@...r.kernel.org
Subject: Re: [PATCH] mtd: rawnand: qcom: Fix DMA sync on FLASH_STATUS register read

On Fri, 2020-10-09 at 08:07:52 UTC, Praveenkumar I wrote:
> After each codeword NAND_FLASH_STATUS is read for possible operational
> failures. But there is no DMA sync for CPU operation before reading it
> and this leads to incorrect or older copy of DMA buffer in reg_read_buf.
> 
> This patch adds the DMA sync on reg_read_buf for CPU before reading it.
> 
> Fixes: 5bc36b2bf6e2 ("mtd: rawnand: qcom: check for operation errors in case of raw read")
> Signed-off-by: Praveenkumar I <ipkumar@...eaurora.org>

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

Miquel