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| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2018-04-21 21:00:35 +0300 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@bootlin.com> | 2018-04-29 09:56:43 +0300 |
| commit | acfc33091f7a5118a7c6d899162e9d9cee72b17a (patch) | |
| tree | c984431dc008bbb8340373614d0c9f8828a36837 /drivers/mtd/nand | |
| parent | 39b77c586e179db03d8cdbc448d4a0fc22f8b13a (diff) | |
| download | linux-acfc33091f7a5118a7c6d899162e9d9cee72b17a.tar.xz | |
mtd: rawnand: fsl_ifc: fix probe function error path
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>
Diffstat (limited to 'drivers/mtd/nand')
| -rw-r--r-- | drivers/mtd/nand/raw/fsl_ifc_nand.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/mtd/nand/raw/fsl_ifc_nand.c b/drivers/mtd/nand/raw/fsl_ifc_nand.c index 61aae0224078..00a609d4473e 100644 --- a/drivers/mtd/nand/raw/fsl_ifc_nand.c +++ b/drivers/mtd/nand/raw/fsl_ifc_nand.c @@ -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); |