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[2/3] Bluetooth: btusb: Trigger gpio reset quicker

Message ID 20210119124258.2.I52cc5d2b62fdeb5f3c5249d41f3631ae25d8dc71@changeid
State New
Headers show
Series Bluetooth: btusb: Expose hw reset to debugfs | expand

Commit Message

Abhishek Pandit-Subedi Jan. 19, 2021, 8:43 p.m. UTC 
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 <abhishekpandit@chromium.org>
Reviewed-by: Miao-chen Chou <mcchou@chromium.org>
Reviewed-by: Daniel Winkler <danielwinkler@google.com>
---

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

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) {