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| author | Dan Carpenter | 2012-11-29 15:16:51 +0100 |
|---|---|---|
| committer | Artem Bityutskiy | 2012-12-10 14:28:49 +0100 |
| commit | 6c810f90140a3274181c4093d5dd4c88c6fff0b4 (patch) | |
| tree | 6e9ee0717e00b69bd52474789bc2ff38cf185912 /drivers/mtd/devices | |
| parent | mtd: bcm47xxnflash: writing support (diff) | |
| download | kernel-qcow2-linux-6c810f90140a3274181c4093d5dd4c88c6fff0b4.tar.gz kernel-qcow2-linux-6c810f90140a3274181c4093d5dd4c88c6fff0b4.tar.xz kernel-qcow2-linux-6c810f90140a3274181c4093d5dd4c88c6fff0b4.zip | |
mtg: docg3: potential divide by zero in doc_write_oob()
If we set oobdelta to zero then we will either return -EINVAL or hit
a divide (modulus) by zero on the next line when we check
"(ooblen % oobdelta)". It's better to just return -EINVAL here instead.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Diffstat (limited to 'drivers/mtd/devices')
| -rw-r--r-- | drivers/mtd/devices/docg3.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c index d34d83b8f9c2..8510ccb9c6f0 100644 --- a/drivers/mtd/devices/docg3.c +++ b/drivers/mtd/devices/docg3.c @@ -1440,7 +1440,7 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, oobdelta = mtd->ecclayout->oobavail; break; default: - oobdelta = 0; + return -EINVAL; } if ((len % DOC_LAYOUT_PAGE_SIZE) || (ooblen % oobdelta) || (ofs % DOC_LAYOUT_PAGE_SIZE)) |