linux-kernel - Re: [PATCH] Bluetooth: hci_sync: fix BR/EDR wakeup bug

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Message-ID: <207e13bb-e0d9-49b6-824f-99a8d0944dff@molgen.mpg.de>
Date:   Mon, 27 Nov 2023 16:08:58 +0100
From:   Paul Menzel <pmenzel@...gen.mpg.de>
To:     15013537245@....com
Cc:     marcel@...tmann.org, johan.hedberg@...il.com, luiz.dentz@...il.com,
        linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
        Clancy Shang <clancy.shang@...ctel.com>
Subject: Re: [PATCH] Bluetooth: hci_sync: fix BR/EDR wakeup bug

Dear Clancy,


Thank you for the patch.

Am 27.11.23 um 10:05 schrieb 15013537245@....com:
> From: "clancy.shang" <clancy.shang@...ctel.com>

It’d be great, if you spelled your name “Clancy Shang”.

     $ git config --global user.name "Clancy Shang"
     $ git commit -s --amend --author="Clancy Shang 
<clancy.shang@...ctel.com>"

> Steam deck in suspending state, but bt controller send hci
> mode change event to host. cause Steam Deck can't into sleep.

Could you please elaborate on the fix little more, for example, mention 
the mode change (0xf7).

> Signed-off-by: clancy.shang <clancy.shang@...ctel.com>
> ---
>   net/bluetooth/hci_sync.c | 10 ++++++----
>   1 file changed, 6 insertions(+), 4 deletions(-)
> 
> diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
> index a15ab0b874a9..a26a58cb2c38 100644
> --- a/net/bluetooth/hci_sync.c
> +++ b/net/bluetooth/hci_sync.c
> @@ -3800,12 +3800,14 @@ static int hci_set_event_mask_sync(struct hci_dev *hdev)
>   	if (lmp_bredr_capable(hdev)) {
>   		events[4] |= 0x01; /* Flow Specification Complete */
>   
> -		/* Don't set Disconnect Complete when suspended as that
> -		 * would wakeup the host when disconnecting due to
> -		 * suspend.
> +		/* Don't set Disconnect Complete and mode change when
> +		 * suspended as that would wakeup the host when disconnecting
> +		 * due to suspend.
>   		 */
> -		if (hdev->suspended)
> +		if (hdev->suspended) {
>   			events[0] &= 0xef;
> +			events[2] &= 0xf7;
> +		}
>   	} else {
>   		/* Use a different default for LE-only devices */
>   		memset(events, 0, sizeof(events));


Kind regards,

Paul Menzel