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| author | Atsushi Nemoto <anemo@mba.ocn.ne.jp> | 2009-06-09 14:31:15 +0100 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2009-06-09 14:31:15 +0100 |
| commit | 272023df26da2668ecc3937f8eeb48c8683b64fa (patch) | |
| tree | f81ad995768fa5b52d30ddc37b60c0db58771ba0 /drivers/mtd | |
| parent | bfee1a4311702c9fdecd8264ffd1126fd0ce92fb (diff) | |
| download | kernel_samsung_smdk4412-272023df26da2668ecc3937f8eeb48c8683b64fa.zip kernel_samsung_smdk4412-272023df26da2668ecc3937f8eeb48c8683b64fa.tar.gz kernel_samsung_smdk4412-272023df26da2668ecc3937f8eeb48c8683b64fa.tar.bz2 | |
mtd: nand: Fix memory leak on txx9ndfmc probe failure.
Commit 81933046ef2a615031c46171013bde2c5225ee69 ('mtd: Fix handling of
mtdname in txx9ndfmc.c') introduced a potential memory leak. The
'mtdname' member of the private data structure is now allocated
separately, but was not freed on certain error paths.
Fix that, and make things simpler by _always_ allocating it separately
so that we don't need 'if (mtdname != dev_name()) kfree(mtdname);'...
which gets ugly now that we're doing it more than once, and more likely
that we'll get it wrong some time.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/txx9ndfmc.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/mtd/nand/txx9ndfmc.c b/drivers/mtd/nand/txx9ndfmc.c index 5f919e6..488088e 100644 --- a/drivers/mtd/nand/txx9ndfmc.c +++ b/drivers/mtd/nand/txx9ndfmc.c @@ -336,20 +336,21 @@ static int __init txx9ndfmc_probe(struct platform_device *dev) txx9_priv->cs = i; txx9_priv->mtdname = kasprintf(GFP_KERNEL, "%s.%u", dev_name(&dev->dev), i); - if (!txx9_priv->mtdname) { - kfree(txx9_priv); - dev_err(&dev->dev, - "Unable to allocate TXx9 NDFMC MTD device name.\n"); - continue; - } } else { txx9_priv->cs = -1; - txx9_priv->mtdname = dev_name(&dev->dev); + txx9_priv->mtdname = kstrdup(dev_name(&dev->dev), + GFP_KERNEL); + } + if (!txx9_priv->mtdname) { + kfree(txx9_priv); + dev_err(&dev->dev, "Unable to allocate MTD name.\n"); + continue; } if (plat->wide_mask & (1 << i)) chip->options |= NAND_BUSWIDTH_16; if (nand_scan(mtd, 1)) { + kfree(txx9_priv->mtdname); kfree(txx9_priv); continue; } @@ -391,8 +392,7 @@ static int __exit txx9ndfmc_remove(struct platform_device *dev) kfree(drvdata->parts[i]); #endif del_mtd_device(mtd); - if (txx9_priv->mtdname != dev_name(&dev->dev)) - kfree(txx9_priv->mtdname); + kfree(txx9_priv->mtdname); kfree(txx9_priv); } return 0; |