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author | Ingo Molnar <mingo@kernel.org> | 2016-07-07 08:35:28 (GMT) |
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committer | Ingo Molnar <mingo@kernel.org> | 2016-07-07 08:35:28 (GMT) |
commit | 4b4b20852d1009c5e8bc357b22353b62e3a241c7 (patch) | |
tree | 1026418471fe10c5b9f2fdff8a6b49bf070938fc /drivers/usb/core/hcd.c | |
parent | 5130213721d01b6632c255d4295a8102cbb58379 (diff) | |
parent | f00c0afdfa625165a609513bc74164d56752ec3e (diff) | |
download | linux-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.c | 17 |
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); |