diff options
Diffstat (limited to 'drivers/pps/pps.c')
| -rw-r--r-- | drivers/pps/pps.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/pps/pps.c b/drivers/pps/pps.c index c76afb980a98..dc7e66cb2762 100644 --- a/drivers/pps/pps.c +++ b/drivers/pps/pps.c @@ -136,6 +136,7 @@ static long pps_cdev_ioctl(struct file *file, case PPS_FETCH: { struct pps_fdata fdata; + unsigned int ev; pr_debug("PPS_FETCH: source %d\n", pps->id); @@ -143,11 +144,12 @@ static long pps_cdev_ioctl(struct file *file, if (err) return -EFAULT; - pps->go = 0; + ev = pps->last_ev; /* Manage the timeout */ if (fdata.timeout.flags & PPS_TIME_INVALID) - err = wait_event_interruptible(pps->queue, pps->go); + err = wait_event_interruptible(pps->queue, + ev != pps->last_ev); else { unsigned long ticks; @@ -159,7 +161,9 @@ static long pps_cdev_ioctl(struct file *file, if (ticks != 0) { err = wait_event_interruptible_timeout( - pps->queue, pps->go, ticks); + pps->queue, + ev != pps->last_ev, + ticks); if (err == 0) return -ETIMEDOUT; } |