Some USB hubs may lose power across suspend/resume.
Add a reset_resume callback to properly reset those bluetoot devices.
Signed-off-by: Laura Abbott <labbott@xxxxxxxxxxxxxxxxx>
---
Now the setup function is called again with the HCI_RESET_RESUME
flag set. The various functions could then use that RESET_RESUME
flag to determine if loading the firmware is appropriate or not.
---
drivers/bluetooth/btusb.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 3c10d4d..34884cf 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -3382,6 +3382,21 @@ done:
return err;
}
+
+static int btusb_reset_resume(struct usb_interface *intf)
+{
+ struct btusb_data *data = usb_get_intfdata(intf);
+ struct hci_dev *hdev = data->hdev;
+ int ret;
+
+ BT_DBG("intf %p", intf);
+
+ ret = btusb_resume(intf);
+ if (ret)
+ return ret;
+
+ return hci_reset_resume_dev(hdev);
+}
#endif
static struct usb_driver btusb_driver = {
@@ -3391,6 +3406,7 @@ static struct usb_driver btusb_driver = {
#ifdef CONFIG_PM
.suspend = btusb_suspend,
.resume = btusb_resume,
+ .reset_resume = btusb_reset_resume,
#endif
.id_table = btusb_table,
.supports_autosuspend = 1,
--
2.4.1
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