diff options
| author | Geliang Tang <geliangtang@gmail.com> | 2017-04-29 09:45:15 +0800 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-07-24 21:23:25 +1000 |
| commit | 3783225130f01ea86fc0ee477a0e72c102ae2a4b (patch) | |
| tree | e9b38322724aa926c81264b5edccc77944d99cc7 /arch/powerpc/platforms/pseries/reconfig.c | |
| parent | 446183e4069e0b62cedfd72ccb90b801b7a5aa98 (diff) | |
powerpc/pseries: use memdup_user_nul
Use memdup_user_nul() helper instead of open-coding to simplify the code.
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/platforms/pseries/reconfig.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/reconfig.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c index e5bf1e84047f..431f513586a9 100644 --- a/arch/powerpc/platforms/pseries/reconfig.c +++ b/arch/powerpc/platforms/pseries/reconfig.c @@ -367,16 +367,9 @@ static ssize_t ofdt_write(struct file *file, const char __user *buf, size_t coun char *kbuf; char *tmp; - if (!(kbuf = kmalloc(count + 1, GFP_KERNEL))) { - rv = -ENOMEM; - goto out; - } - if (copy_from_user(kbuf, buf, count)) { - rv = -EFAULT; - goto out; - } - - kbuf[count] = '\0'; + kbuf = memdup_user_nul(buf, count); + if (IS_ERR(kbuf)) + return PTR_ERR(kbuf); tmp = strchr(kbuf, ' '); if (!tmp) { |