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Commit e5e47465 authored by Roger Quadros's avatar Roger Quadros Committed by Greg Kroah-Hartman
Browse files

usb: usbtest: Add timetout to simple_io() 



Without a timetout some tests e.g. test_halt() can remain stuck forever.

Signed-off-by: default avatarRoger Quadros <rogerq@ti.com>
Reviewed-by: default avatarFelipe Balbi <balbi@ti.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 226b3a2e

drivers/usb/misc/usbtest.c

+11 −3
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 


#include <linux/usb.h>



#define SIMPLE_IO_TIMEOUT	10000	/* in milliseconds */



/*-------------------------------------------------------------------------*/
@@ -366,6 +367,7 @@ static int simple_io( 
	int			max = urb->transfer_buffer_length;

	struct completion	completion;

	int			retval = 0;

	unsigned long		expire;



	urb->context = &completion;

	while (retval == 0 && iterations-- > 0) {
@@ -378,9 +380,15 @@ static int simple_io( 
		if (retval != 0)

			break;



		/* NOTE:  no timeouts; can't be broken out of by interrupt */

		wait_for_completion(&completion);

		expire = msecs_to_jiffies(SIMPLE_IO_TIMEOUT);

		if (!wait_for_completion_timeout(&completion, expire)) {

			usb_kill_urb(urb);

			retval = (urb->status == -ENOENT ?

				  -ETIMEDOUT : urb->status);

		} else {

			retval = urb->status;

		}



		urb->dev = udev;

		if (retval == 0 && usb_pipein(urb->pipe))

			retval = simple_check_buf(tdev, urb);