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| author | Oliver Neukum <oliver@neukum.org> | 2012-04-30 11:13:46 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-06-01 11:18:17 +0400 |
| commit | 774a93aa647f8939867c8ff956847bc63dd51cb3 (patch) | |
| tree | e7438e4bc3a45e6e45cb2968c70809eeaa62e663 /security | |
| parent | 59784034b157f70d1e8cf56b114527faeadecfaf (diff) | |
| download | linux-774a93aa647f8939867c8ff956847bc63dd51cb3.tar.xz | |
usbhid: prevent deadlock during timeout
commit 8815bb09af21316aeb5f8948b24ac62181670db2 upstream.
On some HCDs usb_unlink_urb() can directly call the
completion handler. That limits the spinlocks that can
be taken in the handler to locks not held while calling
usb_unlink_urb()
To prevent a race with resubmission, this patch exposes
usbcore's infrastructure for blocking submission, uses it
and so drops the lock without causing a race in usbhid.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions