linux-kernel - Re: [PATCH v4 3/7] usb: typec: Print err when displayport fails to enter

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Message-ID: <Z1lk5pf-tGeNd342@kuha.fi.intel.com>
Date: Wed, 11 Dec 2024 12:09:42 +0200
From: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To: Abhishek Pandit-Subedi <abhishekpandit@...omium.org>
Cc: tzungbi@...nel.org, linux-usb@...r.kernel.org,
	chrome-platform@...ts.linux.dev, akuchynski@...gle.com,
	pmalani@...omium.org, jthies@...gle.com,
	dmitry.baryshkov@...aro.org, badhri@...gle.com,
	rdbabiera@...gle.com,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 3/7] usb: typec: Print err when displayport fails to
 enter

On Fri, Dec 06, 2024 at 03:38:14PM -0800, Abhishek Pandit-Subedi wrote:
> Print the error reason for typec_altmode_enter so users can understand
> why displayport failed to enter.
> 
> Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@...omium.org>
> ---
> 
> (no changes since v1)
> 
>  drivers/usb/typec/altmodes/displayport.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c
> index 3245e03d59e6..e292780ec309 100644
> --- a/drivers/usb/typec/altmodes/displayport.c
> +++ b/drivers/usb/typec/altmodes/displayport.c
> @@ -252,7 +252,8 @@ static void dp_altmode_work(struct work_struct *work)
>  	case DP_STATE_ENTER:
>  		ret = typec_altmode_enter(dp->alt, NULL);
>  		if (ret && ret != -EBUSY)
> -			dev_err(&dp->alt->dev, "failed to enter mode\n");
> +			dev_err(&dp->alt->dev, "failed to enter mode: %d\n",
> +				ret);

One line is enough.

>  		break;
>  	case DP_STATE_ENTER_PRIME:
>  		ret = typec_cable_altmode_enter(dp->alt, TYPEC_PLUG_SOP_P, NULL);

thanks,

-- 
heikki