This is a note to let you know that I've just added the patch titled
usb: usbtest: Add timetout to simple_io()
to the 3.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-usbtest-add-timetout-to-simple_io.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e5e4746510d140261918aecce2e5e3aa4456f7e9 Mon Sep 17 00:00:00 2001
From: Roger Quadros <rogerq@xxxxxx>
Date: Wed, 18 Dec 2013 15:40:10 +0530
Subject: usb: usbtest: Add timetout to simple_io()
From: Roger Quadros <rogerq@xxxxxx>
commit e5e4746510d140261918aecce2e5e3aa4456f7e9 upstream.
Without a timetout some tests e.g. test_halt() can remain stuck forever.
Signed-off-by: Roger Quadros <rogerq@xxxxxx>
Reviewed-by: Felipe Balbi <balbi@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/misc/usbtest.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -10,6 +10,7 @@
#include <linux/timer.h>
#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);
- retval = urb->status;
+ 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);
Patches currently in stable-queue which might be from rogerq@xxxxxx are
queue-3.10/usb-usbtest-add-timetout-to-simple_io.patch
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