diff options
| author | Markus Elfring <elfring@users.sourceforge.net> | 2016-08-20 19:25:34 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-08-24 09:23:57 +0200 |
| commit | 2ccb5bf0e2f190c825c69087aa40c89db89ca1ad (patch) | |
| tree | 43194d4b269a8ee9e35395e13303f29dd612a94c | |
| parent | bd3a172557d6685f5fbd4b09713f74b84872e2b9 (diff) | |
| download | linux-2ccb5bf0e2f190c825c69087aa40c89db89ca1ad.tar.bz2 | |
s390/tape: Use memdup_user() rather than duplicating its implementation
Reuse existing functionality from memdup_user() instead of keeping
duplicate source code.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| -rw-r--r-- | drivers/s390/char/tape_3590.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/s390/char/tape_3590.c b/drivers/s390/char/tape_3590.c index d3d1936057b4..e352047ed9f7 100644 --- a/drivers/s390/char/tape_3590.c +++ b/drivers/s390/char/tape_3590.c @@ -312,15 +312,10 @@ static int tape_3592_ioctl_kekl_set(struct tape_device *device, return -ENOSYS; if (!crypt_enabled(device)) return -EUNATCH; - ext_kekls = kmalloc(sizeof(*ext_kekls), GFP_KERNEL); - if (!ext_kekls) - return -ENOMEM; - if (copy_from_user(ext_kekls, (char __user *)arg, sizeof(*ext_kekls))) { - rc = -EFAULT; - goto out; - } + ext_kekls = memdup_user((char __user *)arg, sizeof(*ext_kekls)); + if (IS_ERR(ext_kekls)) + return PTR_ERR(ext_kekls); rc = tape_3592_kekl_set(device, ext_kekls); -out: kfree(ext_kekls); return rc; } |