--- zzzz-none-000/linux-3.10.107/drivers/bluetooth/btsdio.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/bluetooth/btsdio.c	2021-02-04 17:41:59.000000000 +0000
@@ -73,6 +73,7 @@
 #define REG_CL_INTRD 0x13	/* Interrupt Clear */
 #define REG_EN_INTRD 0x14	/* Interrupt Enable */
 #define REG_MD_STAT  0x20	/* Bluetooth Mode Status */
+#define REG_MD_SET   0x20	/* Bluetooth Mode Set */
 
 static int btsdio_tx_packet(struct btsdio_data *data, struct sk_buff *skb)
 {
@@ -157,10 +158,9 @@
 
 	data->hdev->stat.byte_rx += len;
 
-	skb->dev = (void *) data->hdev;
 	bt_cb(skb)->pkt_type = hdr[3];
 
-	err = hci_recv_frame(skb);
+	err = hci_recv_frame(data->hdev, skb);
 	if (err < 0)
 		return err;
 
@@ -194,26 +194,20 @@
 
 	BT_DBG("%s", hdev->name);
 
-	if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
-		return 0;
-
 	sdio_claim_host(data->func);
 
 	err = sdio_enable_func(data->func);
-	if (err < 0) {
-		clear_bit(HCI_RUNNING, &hdev->flags);
+	if (err < 0)
 		goto release;
-	}
 
 	err = sdio_claim_irq(data->func, btsdio_interrupt);
 	if (err < 0) {
 		sdio_disable_func(data->func);
-		clear_bit(HCI_RUNNING, &hdev->flags);
 		goto release;
 	}
 
 	if (data->func->class == SDIO_CLASS_BT_B)
-		sdio_writeb(data->func, 0x00, REG_MD_STAT, NULL);
+		sdio_writeb(data->func, 0x00, REG_MD_SET, NULL);
 
 	sdio_writeb(data->func, 0x01, REG_EN_INTRD, NULL);
 
@@ -229,9 +223,6 @@
 
 	BT_DBG("%s", hdev->name);
 
-	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
-		return 0;
-
 	sdio_claim_host(data->func);
 
 	sdio_writeb(data->func, 0x00, REG_EN_INTRD, NULL);
@@ -255,16 +246,12 @@
 	return 0;
 }
 
-static int btsdio_send_frame(struct sk_buff *skb)
+static int btsdio_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 {
-	struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 	struct btsdio_data *data = hci_get_drvdata(hdev);
 
 	BT_DBG("%s", hdev->name);
 
-	if (!test_bit(HCI_RUNNING, &hdev->flags))
-		return -EBUSY;
-
 	switch (bt_cb(skb)->pkt_type) {
 	case HCI_COMMAND_PKT:
 		hdev->stat.cmd_tx++;
@@ -335,6 +322,9 @@
 	hdev->flush    = btsdio_flush;
 	hdev->send     = btsdio_send_frame;
 
+	if (func->vendor == 0x0104 && func->device == 0x00c5)
+		set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
+
 	err = hci_register_dev(hdev);
 	if (err < 0) {
 		hci_free_dev(hdev);