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ODROID-G12: Fix some CSR b/t dongle problem.

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Some CSR dongle send HCI_EV_CMD_COMPLETE first,
then send HCI_EV_HARDWARE_ERROR.

ex) ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)

But We figure out that it is not real hardware error.
We ignore event for HCI_EV_HARDWARE_ERROR.

Change-Id: Iea5421100c64ee6942f0a30f6237eb4b1f6351cb
(cherry picked from commit ea13b65cdc)
This commit is contained in:
Chris
2021-11-24 12:55:42 +09:00
parent 217c36a9c3
commit 1149a2a45b
1 changed files with 15 additions and 0 deletions
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15
net/bluetooth/hci_event.c
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@@ -5236,6 +5236,8 @@ static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
return true;
}
static u8 previous_event = HCI_EV_CMD_COMPLETE;
void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
{
struct hci_event_hdr *hdr = (void *) skb->data;
@@ -5316,6 +5318,17 @@ void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
break;
case HCI_EV_HARDWARE_ERROR:
if (previous_event == HCI_EV_CMD_STATUS) {
/* Some CSR dongle send HCI_EV_CMD_COMPLETE first,
* then send HCI_EV_HARDWARE_ERROR.
* ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
* But We figure out that it is not real hardware error.
* We ignore event for HCI_EV_HARDWARE_ERROR.
*/
BT_DBG("We ignore event for HCI_EV_HARDWARE_ERROR");
previous_event = HCI_EV_CMD_COMPLETE;
break;
}
hci_hardware_error_evt(hdev, skb);
break;
@@ -5459,4 +5472,6 @@ void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
kfree_skb(orig_skb);
kfree_skb(skb);
hdev->stat.evt_rx++;
previous_event = event;
}