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[PW_SID:1077967] [v1] Bluetooth: btmtk: add event filter to filter specific event #3451

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[PW_SID:1077967] [v1] Bluetooth: btmtk: add event filter to filter specific event #3451

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22 changes: 22 additions & 0 deletions drivers/bluetooth/btmtk.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1534,6 +1534,28 @@ int btmtk_usb_shutdown(struct hci_dev *hdev)
return 0;
}
EXPORT_SYMBOL_GPL(btmtk_usb_shutdown);

int btmtk_recv_event(struct hci_dev *hdev, struct sk_buff *skb)
{
struct hci_event_hdr *hdr = (void *)skb->data;

if (hdr->evt == HCI_EV_CMD_COMPLETE) {
struct hci_ev_cmd_complete *ec;
u16 opcode;

ec = (void *)(skb->data + HCI_EVENT_HDR_SIZE);
opcode = __le16_to_cpu(ec->opcode);

/* Filter vendor opcode */
if (opcode == 0xfc5d) {
kfree_skb(skb);
return 0;
}
}

return hci_recv_frame(hdev, skb);
}
EXPORT_SYMBOL_GPL(btmtk_recv_event);
#endif

MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
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7 changes: 7 additions & 0 deletions drivers/bluetooth/btmtk.h
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Original file line number Diff line number Diff line change
Expand Up @@ -220,6 +220,8 @@ int btmtk_usb_suspend(struct hci_dev *hdev);
int btmtk_usb_setup(struct hci_dev *hdev);

int btmtk_usb_shutdown(struct hci_dev *hdev);

int btmtk_recv_event(struct hci_dev *hdev, struct sk_buff *skb);
#else

static inline int btmtk_set_bdaddr(struct hci_dev *hdev,
Expand Down Expand Up @@ -299,4 +301,9 @@ static inline int btmtk_usb_shutdown(struct hci_dev *hdev)
{
return -EOPNOTSUPP;
}

static inline int btmtk_recv_event(struct hci_dev *hdev, struct sk_buff *skb)
{
return -EOPNOTSUPP;
}
#endif
2 changes: 2 additions & 0 deletions drivers/bluetooth/btusb.c
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Original file line number Diff line number Diff line change
Expand Up @@ -4132,6 +4132,8 @@ static int btusb_probe(struct usb_interface *intf,
} else if (id->driver_info & BTUSB_MEDIATEK) {
/* Allocate extra space for Mediatek device */
priv_size += sizeof(struct btmtk_data);

data->recv_event = btmtk_recv_event;
}

data->recv_acl = hci_recv_frame;
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