2021-01-19 20:47:18

by Abhishek Pandit-Subedi

[permalink] [raw]
Subject: [PATCH 2/3] Bluetooth: btusb: Trigger gpio reset quicker

Currently, btusb will only trigger gpio reset during cmd_timeout after
5 commands fail. This number is arbitrarily large and can result in
resets taking longer to occur than necessary.

Reduce this number to 3, which was chosen as a recommended value by
Intel (their firmware allow two commands in flight so they recommend
resetting on the third failed command).

Signed-off-by: Abhishek Pandit-Subedi <[email protected]>
Reviewed-by: Miao-chen Chou <[email protected]>
Reviewed-by: Daniel Winkler <[email protected]>
---

drivers/bluetooth/btusb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 03341e6cbf3ed..880e9cd4ee713 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -578,7 +578,7 @@ static void btusb_gpio_cmd_timeout(struct hci_dev *hdev)
{
struct btusb_data *data = hci_get_drvdata(hdev);

- if (++data->cmd_timeout_cnt < 5)
+ if (++data->cmd_timeout_cnt < 3)
return;

if (!data->reset_gpio) {
--
2.30.0.284.gd98b1dd5eaa7-goog