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mtd: rawnand: fsl_ifc: fix probe function error path

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An error after nand_scan_tail() should trigger a nand_cleanup().
The helper mtd_device_parse_register() returns an error code that should
be checked and nand_cleanup() called accordingly.

However, in this driver, fsl_ifc_chip_remove() which is called upon
error already triggers a nand_release() which is wrong, because a
nand_release() should be triggered only if an mtd_register() succeeded.

Move the nand_release() call out of the fsl_ifc_chip_remove() and put it
back in the *_remove() hook.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
This commit is contained in:
Miquel Raynal 2018-04-21 20:00:35 +02:00 committed by Boris Brezillon
parent 39b77c586e
commit acfc33091f
1 changed files with 9 additions and 3 deletions
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12
drivers/mtd/nand/raw/fsl_ifc_nand.c
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@ -924,8 +924,6 @@ static int fsl_ifc_chip_remove(struct fsl_ifc_mtd *priv)
{
struct mtd_info *mtd = nand_to_mtd(&priv->chip);
nand_release(mtd);
kfree(mtd->name);
if (priv->vbase)
@ -1059,21 +1057,29 @@ static int fsl_ifc_nand_probe(struct platform_device *dev)
/* First look for RedBoot table or partitions on the command
* line, these take precedence over device tree information */
mtd_device_parse_register(mtd, part_probe_types, NULL, NULL, 0);
ret = mtd_device_parse_register(mtd, part_probe_types, NULL, NULL, 0);
if (ret)
goto cleanup_nand;
dev_info(priv->dev, "IFC NAND device at 0x%llx, bank %d\n",
(unsigned long long)res.start, priv->bank);
return 0;
cleanup_nand:
nand_cleanup(&priv->chip);
err:
fsl_ifc_chip_remove(priv);
return ret;
}
static int fsl_ifc_nand_remove(struct platform_device *dev)
{
struct fsl_ifc_mtd *priv = dev_get_drvdata(&dev->dev);
struct mtd_info *mtd = nand_to_mtd(&priv->chip);
nand_release(mtd);
fsl_ifc_chip_remove(priv);
mutex_lock(&fsl_ifc_nand_mutex);