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mtd: rawnand: oxnas: Unregister all devices on error

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commit b60391eb17b2956ff2fc4c348e5a464da21ff9cb upstream.

On error, the oxnas probe path just frees the device which failed and
aborts the probe, leaving unreleased resources.

Fix this situation by calling mtd_device_unregister()/nand_cleanup()
on these.

Fixes: 6685924924 ("mtd: nand: Add OX820 NAND Support")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200519130035.1883-38-miquel.raynal@bootlin.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Miquel Raynal 2020-05-19 15:00:10 +02:00 • committed by Greg Kroah-Hartman
commit f8a2658d0f
1 changed files with 8 additions and 0 deletions
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8
drivers/mtd/nand/raw/oxnas_nand.c
View file

@ -82,6 +82,7 @@ static int oxnas_nand_probe(struct platform_device *pdev)
struct resource *res;
int count = 0;
int err = 0;
int i;
/* Allocate memory for the device structure (and zero it) */
oxnas = devm_kzalloc(&pdev->dev, sizeof(*oxnas),
@ -161,6 +162,13 @@ err_cleanup_nand:
nand_cleanup(chip);
err_release_child:
of_node_put(nand_np);
for (i = 0; i < oxnas->nchips; i++) {
chip = oxnas->chips[i];
WARN_ON(mtd_device_unregister(nand_to_mtd(chip)));
nand_cleanup(chip);
}
err_clk_unprepare:
clk_disable_unprepare(oxnas->clk);
return err;