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mtd: rawnand: meson: Fix a potential double free issue

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[ Upstream commit ec0da06337 ]

When meson_nfc_nand_chip_cleanup() is called, it will call:
	meson_nfc_free_buffer(&meson_chip->nand);
	nand_cleanup(&meson_chip->nand);

nand_cleanup() in turn will call nand_detach() which calls the
.detach_chip() which is here meson_nand_detach_chip().

meson_nand_detach_chip() already calls meson_nfc_free_buffer(), so we
could double free some memory.

Fix it by removing the unneeded explicit call to meson_nfc_free_buffer().

Fixes: 8fae856c53 ("mtd: rawnand: meson: add support for Amlogic NAND flash controller")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Liang Yang <liang.yang@amlogic.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/ec15c358b8063f7c50ff4cd628cf0d2e14e43f49.1653064877.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Christophe JAILLET 2022-05-20 18:41:40 +02:00 committed by Greg Kroah-Hartman
parent 941ef6997f
commit b0e82f95fd
1 changed files with 0 additions and 1 deletions
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1
drivers/mtd/nand/raw/meson_nand.c
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@ -1307,7 +1307,6 @@ static int meson_nfc_nand_chip_cleanup(struct meson_nfc *nfc)
if (ret) if (ret)
return ret; return ret;
meson_nfc_free_buffer(&meson_chip->nand);
nand_cleanup(&meson_chip->nand); nand_cleanup(&meson_chip->nand);
list_del(&meson_chip->node); list_del(&meson_chip->node);
} }