From: Miquel Raynal miquel.raynal@bootlin.com
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: 668592492409 ("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@bootl... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/mtd/nand/raw/oxnas_nand.c | 8 ++++++++ 1 file changed, 8 insertions(+)
--- a/drivers/mtd/nand/raw/oxnas_nand.c +++ b/drivers/mtd/nand/raw/oxnas_nand.c @@ -82,6 +82,7 @@ static int oxnas_nand_probe(struct platf 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;