Don't wakeup the fdc worker thread once a second when idle.

The fdc worker thread was using a one second timeout while waiting for
a new bio to arrive or for the device to detach.  However, the driver
already does a wakeup when queueing a new bio or asking the thread to
detach, so the timeout only served to waste CPU time waking up the
thread once a second just so it could go right back to sleep.  Use an
infinite timeout instead.

Discussed with:	phk
Sponsored by:	Netflix

1 files changed, 1 insertions, 1 deletions

diff --git a/sys/dev/fdc/fdc.c b/sys/dev/fdc/fdc.c
index a8a607fd83f0..a4abd196a579 100644
--- a/sys/dev/fdc/fdc.c
+++ b/sys/dev/fdc/fdc.c
@@ -968,7 +968,7 @@ fdc_worker(struct fdc_data *fdc)
 			fdc->bp = bioq_takefirst(&fdc->head);
 			if (fdc->bp == NULL)
 				msleep(&fdc->head, &fdc->fdc_mtx,
-				    PRIBIO, "-", hz);
+				    PRIBIO, "-", 0);
 		} while (fdc->bp == NULL &&
 		    (fdc->flags & FDC_KTHREAD_EXIT) == 0);
 		mtx_unlock(&fdc->fdc_mtx);