Commit e616b39a authored Jul 07, 2015 by Sunny Kumar Committed by Greg Kroah-Hartman Jul 22, 2015

usb: usleep_range is preferred over udelay where wakeup is flexible



According to Documentation/timers/timers-howto.txt"
udelay() is only called once from a place where sleeping is allowed.
We can replace it with a call to usleep_range()
with a reasonable upper limit.

Signed-off-by: Sunny Kumar <sunny.kumar.roy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 655fe4ef

drivers/usb/storage/transport.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1111,7 +1111,7 @@ int usb_stor_Bulk_transport(struct scsi_cmnd srb, struct us_data us)
		* command phase and the data phase. Some devices need a little
		* more than that, probably because of clock rate inaccuracies. */
		if (unlikely(us->fflags & US_FL_GO_SLOW))
		udelay(125);
		usleep_range(125, 150);

		if (transfer_length) {
		unsigned int pipe = srb->sc_data_direction == DMA_FROM_DEVICE ?