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| author |   Ramax Lo <ramaxlo@gmail.com> | 2010-01-14 10:15:05 +0800 |
|---|---|---|
| committer |   Ben Dooks <ben-linux@fluff.org> | 2010-01-14 11:25:44 +0900 |
| commit | 9b96918a974fcd6c9e752cc8b28157f776c601d3 (patch) | |
| tree | 7aaf19ea7af8a9dc1cc79425934fd56bdf87ccfb /arch/arm | |
| parent | Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 (diff) | |
| download | linux-dev-9b96918a974fcd6c9e752cc8b28157f776c601d3.tar.xz linux-dev-9b96918a974fcd6c9e752cc8b28157f776c601d3.zip | |
ARM: S3C: NAND: Check the existence of nr_map before copying
Since the structure field nr_map is optional, we need to check whether the
chip number map is provided to avoid unexpected NULL pointer exception.
Signed-off-by: Ramax Lo <ramaxlo@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/plat-s3c/dev-nand.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/plat-s3c/dev-nand.c b/arch/arm/plat-s3c/dev-nand.c index 84808ccda70e..a52fb6cf618f 100644 --- a/arch/arm/plat-s3c/dev-nand.c +++ b/arch/arm/plat-s3c/dev-nand.c @@ -58,8 +58,8 @@ static int __init s3c_nand_copy_set(struct s3c2410_nand_set *set) return -ENOMEM; } - size = sizeof(int) * set->nr_chips; - if (size) { + if (set->nr_map && set->nr_chips) { + size = sizeof(int) * set->nr_chips; ptr = kmemdup(set->nr_map, size, GFP_KERNEL); set->nr_map = ptr; |