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path: root/drivers/usb/core/hub.c
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Diffstat (limited to 'drivers/usb/core/hub.c')
-rw-r--r--drivers/usb/core/hub.c24
1 files changed, 13 insertions, 11 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 94789be..4cfe32a 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -713,18 +713,11 @@ static void hub_restart(struct usb_hub *hub, int type)
}
/* Was the power session lost while we were suspended? */
- switch (type) {
- case HUB_RESET_RESUME:
- portstatus = 0;
- portchange = USB_PORT_STAT_C_CONNECTION;
- break;
+ status = hub_port_status(hub, port1, &portstatus, &portchange);
- case HUB_RESET:
- case HUB_RESUME:
- status = hub_port_status(hub, port1,
- &portstatus, &portchange);
- break;
- }
+ /* If the device is gone, khubd will handle it later */
+ if (status == 0 && !(portstatus & USB_PORT_STAT_CONNECTION))
+ continue;
/* For "USB_PERSIST"-enabled children we must
* mark the child device for reset-resume and
@@ -2080,6 +2073,8 @@ int usb_port_resume(struct usb_device *udev)
}
clear_bit(port1, hub->busy_bits);
+ if (!hub->hdev->parent && !hub->busy_bits[0])
+ usb_enable_root_hub_irq(hub->hdev->bus);
if (status == 0)
status = finish_port_resume(udev);
@@ -3009,6 +3004,11 @@ static void hub_events(void)
hub->activating = 0;
+ /* If this is a root hub, tell the HCD it's okay to
+ * re-enable port-change interrupts now. */
+ if (!hdev->parent && !hub->busy_bits[0])
+ usb_enable_root_hub_irq(hdev->bus);
+
loop_autopm:
/* Allow autosuspend if we're not going to run again */
if (list_empty(&hub->event_list))
@@ -3234,6 +3234,8 @@ int usb_reset_device(struct usb_device *udev)
break;
}
clear_bit(port1, parent_hub->busy_bits);
+ if (!parent_hdev->parent && !parent_hub->busy_bits[0])
+ usb_enable_root_hub_irq(parent_hdev->bus);
if (ret < 0)
goto re_enumerate;
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