linux-kernel - Re: [PATCH v2 2/8] drm: zynqmp_dp: Downgrade log level for aux retries message

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Date: Wed, 20 Mar 2024 07:46:28 +0200
From: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
To: Sean Anderson <sean.anderson@...ux.dev>
Cc: Michal Simek <michal.simek@....com>, David Airlie <airlied@...il.com>,
 linux-kernel@...r.kernel.org, Daniel Vetter <daniel@...ll.ch>,
 linux-arm-kernel@...ts.infradead.org,
 Laurent Pinchart <laurent.pinchart@...asonboard.com>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v2 2/8] drm: zynqmp_dp: Downgrade log level for aux
 retries message

On 20/03/2024 00:51, Sean Anderson wrote:
> Enable this message for verbose debugging only as it is otherwise
> printed after every AUX message, quickly filling the log buffer.
> 
> Signed-off-by: Sean Anderson <sean.anderson@...ux.dev>
> Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> ---
> 
> (no changes since v1)
> 
>   drivers/gpu/drm/xlnx/zynqmp_dp.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/xlnx/zynqmp_dp.c b/drivers/gpu/drm/xlnx/zynqmp_dp.c
> index a0606fab0e22..98a32e6a0459 100644
> --- a/drivers/gpu/drm/xlnx/zynqmp_dp.c
> +++ b/drivers/gpu/drm/xlnx/zynqmp_dp.c
> @@ -1006,7 +1006,7 @@ zynqmp_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
>   					       msg->buffer, msg->size,
>   					       &msg->reply);
>   		if (!ret) {
> -			dev_dbg(dp->dev, "aux %d retries\n", i);
> +			dev_vdbg(dp->dev, "aux %d retries\n", i);
>   			return msg->size;
>   		}
>   

Yes, these are annoying... In my work branch I had added "if (i)" there, 
so that this is only printed if there actually are retries.

But this is fine too (or even dropping the print totally), so:

Reviewed-by: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>

  Tomi