linux-kernel - Re: [PATCH v2] HID: nintendo: Don't fail on setting baud rate

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Date: Wed, 3 Apr 2024 13:39:41 +0200 (CEST)
From: Jiri Kosina <jikos@...nel.org>
To: Max Staudt <max@...as.org>
cc: "Daniel J . Ogorchock" <djogorchock@...il.com>, 
    Benjamin Tissoires <benjamin.tissoires@...hat.com>, 
    linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] HID: nintendo: Don't fail on setting baud rate

On Sat, 16 Mar 2024, Max Staudt wrote:

> Some third-party controllers can't change the baud rate.
> 
> We can still use the gamepad as-is, so let's do that.
> 
> Signed-off-by: Max Staudt <max@...as.org>
> ---
> Changes in v2:
>  - Made hid_err() a hid_warn() since it's not a fatal failure.
> ---
>  drivers/hid/hid-nintendo.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/hid/hid-nintendo.c b/drivers/hid/hid-nintendo.c
> index 997c3a1adaca..395ed6b5ef59 100644
> --- a/drivers/hid/hid-nintendo.c
> +++ b/drivers/hid/hid-nintendo.c
> @@ -2164,8 +2164,11 @@ static int joycon_init(struct hid_device *hdev)
>  		/* set baudrate for improved latency */
>  		ret = joycon_send_usb(ctlr, JC_USB_CMD_BAUDRATE_3M, HZ);
>  		if (ret) {
> -			hid_err(hdev, "Failed to set baudrate; ret=%d\n", ret);
> -			goto out_unlock;
> +			/*
> +			 * We can function with the default baudrate.
> +			 * Provide a warning, and continue on.
> +			 */
> +			hid_warn(hdev, "Failed to set baudrate (ret=%d), continuing anyway\n", ret);

Applied, thank you.

-- 
Jiri Kosina
SUSE Labs