diff options
Diffstat (limited to 'drivers/usb/core/hub.c')
| -rw-r--r-- | drivers/usb/core/hub.c | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 727c784893b9..49b139c15051 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2274,7 +2274,6 @@ static void hub_port_finish_reset(struct usb_hub *hub, int port1, case -ENODEV: clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_RESET); - /* FIXME need disconnect() for NOTATTACHED device */ if (hub_is_superspeed(hub->hdev)) { clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_BH_PORT_RESET); @@ -2308,6 +2307,18 @@ static int hub_port_reset(struct usb_hub *hub, int port1, * Some companion controllers don't like it when they mix. */ down_read(&ehci_cf_port_reset_rwsem); + } else if (!warm) { + /* + * If the caller hasn't explicitly requested a warm reset, + * double check and see if one is needed. + */ + status = hub_port_status(hub, port1, + &portstatus, &portchange); + if (status < 0) + goto done; + + if (hub_port_warm_reset_required(hub, portstatus)) + warm = true; } /* Reset the port */ @@ -3866,12 +3877,21 @@ static void hub_events(void) */ if (hub_port_warm_reset_required(hub, portstatus)) { int status; + struct usb_device *udev = + hub->hdev->children[i - 1]; dev_dbg(hub_dev, "warm reset port %d\n", i); - status = hub_port_reset(hub, i, NULL, - HUB_BH_RESET_TIME, true); - if (status < 0) - hub_port_disable(hub, i, 1); + if (!udev) { + status = hub_port_reset(hub, i, + NULL, HUB_BH_RESET_TIME, + true); + if (status < 0) + hub_port_disable(hub, i, 1); + } else { + usb_lock_device(udev); + status = usb_reset_device(udev); + usb_unlock_device(udev); + } connect_change = 0; } |