linux-kernel - Re: [PATCH] Bluetooth: btrtl: Shorten HCI_OP

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Message-ID: <6e333fc5-cd36-4fed-9704-9e3d69633155@molgen.mpg.de>
Date: Fri, 27 Sep 2024 08:48:20 +0200
From: Paul Menzel <pmenzel@...gen.mpg.de>
To: Hilda Wu <hildawu@...ltek.com>
Cc: marcel@...tmann.org, luiz.dentz@...il.com,
 linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
 alex_lu@...lsil.com.cn, max.chou@...ltek.com, kidman@...ltek.com,
 howardchung@...gle.com, apusaka@...omium.org, yinghsu@...omium.org,
 johnlai@...gle.com
Subject: Re: [PATCH] Bluetooth: btrtl: Shorten HCI_OP_RESET timeout

Dear Hilda,


Thank you for your patch.

Am 27.09.24 um 08:41 schrieb Hilda Wu:
> Shorten the timeout for the HCI Reset on shutdown.

Why? It’d be great if you elaborated, and documented how to reproduce 
the problem.

What is the old and new timeout value? For the git commit message 
summary, maybe use:

Bluetooth: btrtl: Decrease HCI_OP_RESET timeout from x ms to y ms

> Signed-off-by: Hilda Wu <hildawu@...ltek.com>
> ---
>   drivers/bluetooth/btrtl.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c
> index 2d95b3ea046d..7128a8a0ba25 100644
> --- a/drivers/bluetooth/btrtl.c
> +++ b/drivers/bluetooth/btrtl.c
> @@ -1371,7 +1371,7 @@ int btrtl_shutdown_realtek(struct hci_dev *hdev)
>   	/* According to the vendor driver, BT must be reset on close to avoid
>   	 * firmware crash.
>   	 */
> -	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
> +	skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_CMD_TIMEOUT);
>   	if (IS_ERR(skb)) {
>   		ret = PTR_ERR(skb);
>   		bt_dev_err(hdev, "HCI reset during shutdown failed");


Kind regards,

Paul