diff options
Diffstat (limited to 'arch/powerpc/kernel/nvram_64.c')
| -rw-r--r-- | arch/powerpc/kernel/nvram_64.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c index eae61b044e9e..496d6393bd41 100644 --- a/arch/powerpc/kernel/nvram_64.c +++ b/arch/powerpc/kernel/nvram_64.c @@ -792,21 +792,17 @@ static ssize_t dev_nvram_write(struct file *file, const char __user *buf, count = min_t(size_t, count, size - *ppos); count = min(count, PAGE_SIZE); - ret = -ENOMEM; - tmp = kmalloc(count, GFP_KERNEL); - if (!tmp) - goto out; - - ret = -EFAULT; - if (copy_from_user(tmp, buf, count)) + tmp = memdup_user(buf, count); + if (IS_ERR(tmp)) { + ret = PTR_ERR(tmp); goto out; + } ret = ppc_md.nvram_write(tmp, count, ppos); -out: kfree(tmp); +out: return ret; - } static long dev_nvram_ioctl(struct file *file, unsigned int cmd, |