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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-09-11 04:34:46 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-09-11 04:34:46 -0300
commit863981e96738983919de841ec669e157e6bdaeb0 (patch)
treed6d89a12e7eb8017837c057935a2271290907f76 /drivers/ptp
parent8dec7c70575785729a6a9e6719a955e9c545bcab (diff)
Linux-libre 4.7.1-gnupck-4.7.1-gnu
Diffstat (limited to 'drivers/ptp')
-rw-r--r--drivers/ptp/ptp_chardev.c12
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/ptp/ptp_chardev.c b/drivers/ptp/ptp_chardev.c
index 579fd6529..d637c933c 100644
--- a/drivers/ptp/ptp_chardev.c
+++ b/drivers/ptp/ptp_chardev.c
@@ -208,14 +208,10 @@ long ptp_ioctl(struct posix_clock *pc, unsigned int cmd, unsigned long arg)
break;
case PTP_SYS_OFFSET:
- sysoff = kmalloc(sizeof(*sysoff), GFP_KERNEL);
- if (!sysoff) {
- err = -ENOMEM;
- break;
- }
- if (copy_from_user(sysoff, (void __user *)arg,
- sizeof(*sysoff))) {
- err = -EFAULT;
+ sysoff = memdup_user((void __user *)arg, sizeof(*sysoff));
+ if (IS_ERR(sysoff)) {
+ err = PTR_ERR(sysoff);
+ sysoff = NULL;
break;
}
if (sysoff->n_samples > PTP_MAX_SAMPLES) {