floppy: initialize debug jiffies offset

Set debug jiffies offset at initialization.  Avoids wierd values showing
up if debugging enabled.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 90c4038..0cb24f00 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -4175,6 +4175,9 @@
 	int i, unit, drive;
 	int err, dr;
 
+	set_debugt();
+	interruptjiffies = resultjiffies = jiffies;
+
 #if defined(CONFIG_PPC)
 	if (check_legacy_ioport(FDC1))
 		return -ENODEV;