This is a note to let you know that I've just added the patch titled
USB: cdc-wdm: poll must return POLLHUP if device is gone
to the 3.0-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-wdm-poll-must-return-pollhup-if-device-is-gone.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 616b6937e348ef2b4c6ea5fef2cd3c441145efb0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= <[email protected]>
Date: Wed, 9 May 2012 13:53:21 +0200
Subject: USB: cdc-wdm: poll must return POLLHUP if device is gone
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From: Bjørn Mork <[email protected]>
commit 616b6937e348ef2b4c6ea5fef2cd3c441145efb0 upstream.
Else the poll will be restarted indefinitely in a tight loop,
preventing final device cleanup.
Cc: Oliver Neukum <[email protected]>
Signed-off-by: Bjørn Mork <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/usb/class/cdc-wdm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -511,7 +511,7 @@ static unsigned int wdm_poll(struct file
spin_lock_irqsave(&desc->iuspin, flags);
if (test_bit(WDM_DISCONNECTING, &desc->flags)) {
- mask = POLLERR;
+ mask = POLLHUP | POLLERR;
spin_unlock_irqrestore(&desc->iuspin, flags);
goto desc_out;
}
Patches currently in stable-queue which might be from [email protected] are
queue-3.0/usb-cdc-wdm-poll-must-return-pollhup-if-device-is-gone.patch
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