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Message-ID: <2bb62caa-e213-42fa-ac9c-4118f66aee9e@linaro.org>
Date: Mon, 24 Jun 2024 11:20:18 +0200
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Jonas Karlman <jonas@...boo.se>, Andrzej Hajda <andrzej.hajda@...el.com>,
Robert Foss <rfoss@...nel.org>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
Jernej Skrabec <jernej.skrabec@...il.com>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/8] drm: bridge: dw_hdmi: Remove cec_notifier_mutex
On 11/06/2024 17:50, Jonas Karlman wrote:
> With CEC phys addr invalidation moved away from the irq handler there is
> no longer a need for cec_notifier_mutex, remove it.
>
> Signed-off-by: Jonas Karlman <jonas@...boo.se>
> ---
> drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 11 +----------
> 1 file changed, 1 insertion(+), 10 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> index 0814ca181f04..256e00a97a9a 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> @@ -189,7 +189,6 @@ struct dw_hdmi {
> void (*enable_audio)(struct dw_hdmi *hdmi);
> void (*disable_audio)(struct dw_hdmi *hdmi);
>
> - struct mutex cec_notifier_mutex;
> struct cec_notifier *cec_notifier;
>
> hdmi_codec_plugged_cb plugged_cb;
> @@ -2459,11 +2458,8 @@ dw_hdmi_connector_detect(struct drm_connector *connector, bool force)
>
> status = dw_hdmi_detect(hdmi);
>
> - if (status == connector_status_disconnected) {
> - mutex_lock(&hdmi->cec_notifier_mutex);
> + if (status == connector_status_disconnected)
> cec_notifier_phys_addr_invalidate(hdmi->cec_notifier);
> - mutex_unlock(&hdmi->cec_notifier_mutex);
> - }
>
> return status;
> }
> @@ -2577,9 +2573,7 @@ static int dw_hdmi_connector_create(struct dw_hdmi *hdmi)
> if (!notifier)
> return -ENOMEM;
>
> - mutex_lock(&hdmi->cec_notifier_mutex);
> hdmi->cec_notifier = notifier;
> - mutex_unlock(&hdmi->cec_notifier_mutex);
>
> return 0;
> }
> @@ -2877,10 +2871,8 @@ static void dw_hdmi_bridge_detach(struct drm_bridge *bridge)
> {
> struct dw_hdmi *hdmi = bridge->driver_private;
>
> - mutex_lock(&hdmi->cec_notifier_mutex);
> cec_notifier_conn_unregister(hdmi->cec_notifier);
> hdmi->cec_notifier = NULL;
> - mutex_unlock(&hdmi->cec_notifier_mutex);
> }
>
> static enum drm_mode_status
> @@ -3303,7 +3295,6 @@ struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev,
>
> mutex_init(&hdmi->mutex);
> mutex_init(&hdmi->audio_mutex);
> - mutex_init(&hdmi->cec_notifier_mutex);
> spin_lock_init(&hdmi->audio_lock);
>
> ret = dw_hdmi_parse_dt(hdmi);
Reviewed-by: Neil Armstrong <neil.armstrong@...aro.org>
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