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authorIngo Molnar <mingo@kernel.org>2016-07-07 08:35:28 (GMT)
committerIngo Molnar <mingo@kernel.org>2016-07-07 08:35:28 (GMT)
commit4b4b20852d1009c5e8bc357b22353b62e3a241c7 (patch)
tree1026418471fe10c5b9f2fdff8a6b49bf070938fc /drivers/usb/core/hcd.c
parent5130213721d01b6632c255d4295a8102cbb58379 (diff)
parentf00c0afdfa625165a609513bc74164d56752ec3e (diff)
downloadlinux-4b4b20852d1009c5e8bc357b22353b62e3a241c7.tar.xz
Merge branch 'timers/fast-wheel' into timers/core
Diffstat (limited to 'drivers/usb/core/hcd.c')
-rw-r--r--drivers/usb/core/hcd.c17
1 files changed, 7 insertions, 10 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 34b837a..d2e3f65 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -2598,26 +2598,23 @@ EXPORT_SYMBOL_GPL(usb_create_hcd);
* Don't deallocate the bandwidth_mutex until the last shared usb_hcd is
* deallocated.
*
- * Make sure to only deallocate the bandwidth_mutex when the primary HCD is
- * freed. When hcd_release() is called for either hcd in a peer set
- * invalidate the peer's ->shared_hcd and ->primary_hcd pointers to
- * block new peering attempts
+ * Make sure to deallocate the bandwidth_mutex only when the last HCD is
+ * freed. When hcd_release() is called for either hcd in a peer set,
+ * invalidate the peer's ->shared_hcd and ->primary_hcd pointers.
*/
static void hcd_release(struct kref *kref)
{
struct usb_hcd *hcd = container_of (kref, struct usb_hcd, kref);
mutex_lock(&usb_port_peer_mutex);
- if (usb_hcd_is_primary_hcd(hcd)) {
- kfree(hcd->address0_mutex);
- kfree(hcd->bandwidth_mutex);
- }
if (hcd->shared_hcd) {
struct usb_hcd *peer = hcd->shared_hcd;
peer->shared_hcd = NULL;
- if (peer->primary_hcd == hcd)
- peer->primary_hcd = NULL;
+ peer->primary_hcd = NULL;
+ } else {
+ kfree(hcd->address0_mutex);
+ kfree(hcd->bandwidth_mutex);
}
mutex_unlock(&usb_port_peer_mutex);
kfree(hcd);