linux-kernel - Re: [RFC PATCH v1] mtd: rawnand: meson: invalidate cache on polling ECC bit

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Message-Id: <20230322160748.2232587-1-miquel.raynal@bootlin.com>
Date:   Wed, 22 Mar 2023 17:07:48 +0100
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Arseniy Krasnov <avkrasnov@...rdevices.ru>,
        Liang Yang <liang.yang@...ogic.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Jianxin Pan <jianxin.pan@...ogic.com>,
        Yixun Lan <yixun.lan@...ogic.com>
Cc:     linux-mtd@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kernel@...rdevices.ru, oxffffaa@...il.com
Subject: Re: [RFC PATCH v1] mtd: rawnand: meson: invalidate cache on polling ECC bit

On Mon, 2023-03-13 at 07:32:44 UTC, Arseniy Krasnov wrote:
> 'info_buf' memory is cached and driver polls ECC bit in it. This bit
> is set by the NAND controller. If 'usleep_range()' returns before device
> sets this bit, 'info_buf' will be cached and driver won't see update of
> this bit and will loop forever.
> 
> Fixes: 8fae856c5350 ("mtd: rawnand: meson: add support for Amlogic NAND flash controller")
> Signed-off-by: Arseniy Krasnov <AVKrasnov@...rdevices.ru>
> Reviewed-by: Neil Armstrong <neil.armstrong@...aro.org>

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

Miquel