Patch "USB: cdc-acm: fix shutdown and suspend race" has been added to the 3.15-stable tree

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



This is a note to let you know that I've just added the patch titled

    USB: cdc-acm: fix shutdown and suspend race

to the 3.15-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-cdc-acm-fix-shutdown-and-suspend-race.patch
and it can be found in the queue-3.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From ed797074031a37bb9bf4a70952fffc606b77274d Mon Sep 17 00:00:00 2001
From: Johan Hovold <jhovold@xxxxxxxxx>
Date: Mon, 26 May 2014 19:23:40 +0200
Subject: USB: cdc-acm: fix shutdown and suspend race

From: Johan Hovold <jhovold@xxxxxxxxx>

commit ed797074031a37bb9bf4a70952fffc606b77274d upstream.

We should stop I/O unconditionally at suspend rather than rely on the
tty-port initialised flag (which is set prior to stopping I/O during
shutdown) in order to prevent suspend returning with URBs still active.

Fixes: 11ea859d64b6 ("USB: additional power savings for cdc-acm devices
that support remote wakeup")

Signed-off-by: Johan Hovold <jhovold@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/usb/class/cdc-acm.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1550,8 +1550,7 @@ static int acm_suspend(struct usb_interf
 	if (cnt)
 		return 0;
 
-	if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags))
-		stop_data_traffic(acm);
+	stop_data_traffic(acm);
 
 	return 0;
 }


Patches currently in stable-queue which might be from jhovold@xxxxxxxxx are

queue-3.15/usb-cdc-acm-fix-i-o-after-failed-open.patch
queue-3.15/usb-cdc-acm-fix-write-and-resume-race.patch
queue-3.15/usb-cdc-acm-fix-runtime-pm-for-control-messages.patch
queue-3.15/usb-cdc-acm-fix-broken-runtime-suspend.patch
queue-3.15/usb-cdc-acm-fix-open-and-suspend-race.patch
queue-3.15/usb-cdc-acm-fix-potential-urb-leak-and-pm-imbalance-in-write.patch
queue-3.15/usb-cdc-acm-fix-runtime-pm-imbalance-at-shutdown.patch
queue-3.15/usb-cdc-acm-fix-shutdown-and-suspend-race.patch
queue-3.15/usb-cdc-acm-fix-write-and-suspend-race.patch
queue-3.15/usb-cdc-acm-fix-failed-open-not-being-detected.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]