mtd: rawnand: meson: invalidate cache on polling ECC bit

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[ Upstream commit e732e39ed9 ]

'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: 8fae856c53 ("mtd: rawnand: meson: add support for Amlogic NAND flash controller")
Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/d4ef0bd6-816e-f6fa-9385-f05f775f0ae2@sberdevices.ru
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Arseniy Krasnov 2023-03-13 10:32:44 +03:00 • committed by Greg Kroah-Hartman

parent 702853e21b

commit 00ecda56fd

1 changed files with 7 additions and 1 deletions

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drivers/mtd/nand/raw/meson_nand.c

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