| Message ID | 1411540229-24915-1-git-send-email-Li.Xiubo@freescale.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | c7908a37aeee2a038d7b1492eae29750d8738d2e |
| Headers | show |
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 95cfe3b..e19512f 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -552,6 +552,9 @@ int spi_register_board_info(struct spi_board_info const *info, unsigned n) struct boardinfo *bi; int i; + if (!n) + return -EINVAL; + bi = kzalloc(n * sizeof(*bi), GFP_KERNEL); if (!bi) return -ENOMEM;
Since we cannot make sure the 'n' will always be none zero here, and then if either equal to zero, the kzalloc() will return ZERO_SIZE_PTR, which equals to ((void *)16). So this patch fix this with just doing the zero check before calling kzalloc(). Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com> --- drivers/spi/spi.c | 3 +++ 1 file changed, 3 insertions(+)