diff options
Diffstat (limited to 'drivers/ptp/ptp_chardev.c')
| -rw-r--r-- | drivers/ptp/ptp_chardev.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/ptp/ptp_chardev.c b/drivers/ptp/ptp_chardev.c index af3bc65c4595..362bf756e6b7 100644 --- a/drivers/ptp/ptp_chardev.c +++ b/drivers/ptp/ptp_chardev.c @@ -136,7 +136,10 @@ long ptp_ioctl(struct posix_clock *pc, unsigned int cmd, unsigned long arg) caps.pps = ptp->info->pps; caps.n_pins = ptp->info->n_pins; caps.cross_timestamping = ptp->info->getcrosststamp != NULL; - caps.adjust_phase = ptp->info->adjphase != NULL; + caps.adjust_phase = ptp->info->adjphase != NULL && + ptp->info->getmaxphase != NULL; + if (caps.adjust_phase) + caps.max_phase_adj = ptp->info->getmaxphase(ptp->info); if (copy_to_user((void __user *)arg, &caps, sizeof(caps))) err = -EFAULT; break; |