| commit | 07d316a22e119fa301fd7dba7f1e1adfd4f72c05 | |
| author | Alan Stern <stern@rowland.harvard.edu> | |
| Fri, 5 Aug 2016 15:51:30 +0000 (5 11:51 -0400) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Tue, 9 Aug 2016 13:45:59 +0000 (9 15:45 +0200) | ||
| tree | 12ec0c6092212430b4355d465c540039ca31e342 | treesnapshot (tar.gz zip) |
| parent | ca5cbc8b02f9b21cc8cd1ab36668763ec34f9ee8 | commitdiff |
USB: hub: change the locking in hub_activate
The locking in hub_activate() is not adequate to provide full mutual
exclusion with hub_quiesce(). The subroutine locks the hub's
usb_interface, but the callers of hub_quiesce() (such as
hub_pre_reset() and hub_event()) hold the lock to the hub's
usb_device.
This patch changes hub_activate() to make it acquire the same lock as
those other routines.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: <stable@vger.kernel.org> #4.4+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The locking in hub_activate() is not adequate to provide full mutual
exclusion with hub_quiesce(). The subroutine locks the hub's
usb_interface, but the callers of hub_quiesce() (such as
hub_pre_reset() and hub_event()) hold the lock to the hub's
usb_device.
This patch changes hub_activate() to make it acquire the same lock as
those other routines.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: <stable@vger.kernel.org> #4.4+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| drivers/usb/core/hub.c | diffblobblamehistory |