diff mbox series

[v3,2/4] drm/omap: hdmi4: Ensure the device is active during bind

Message ID 20181110111654.4387-3-laurent.pinchart@ideasonboard.com
State New, archived
Headers show
Series omapdrm: Fix runtime PM issues at module load and unload time | expand

Commit Message

Laurent Pinchart Nov. 10, 2018, 11:16 a.m. UTC
The bind function performs hardware access (in hdmi4_cec_init()) and
thus requires the device to be active. Ensure this by surrounding the
bind function by hdmi_runtime_get() and hdmi_runtime_put() calls.

Fixes: 27d624527d99 ("drm/omap: dss: Acquire next dssdev at probe time")
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
Changes since v2:

- Call hdmi_runtime_put() instead of hdmi_runtime_get() in error path
---
 drivers/gpu/drm/omapdrm/dss/hdmi4.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

Comments

Sebastian Reichel Nov. 11, 2018, 12:48 a.m. UTC | #1
Hi,

On Sat, Nov 10, 2018 at 01:16:52PM +0200, Laurent Pinchart wrote:
> The bind function performs hardware access (in hdmi4_cec_init()) and
> thus requires the device to be active. Ensure this by surrounding the
> bind function by hdmi_runtime_get() and hdmi_runtime_put() calls.
> 
> Fixes: 27d624527d99 ("drm/omap: dss: Acquire next dssdev at probe time")
> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> ---

Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>

-- Sebastian

> Changes since v2:
> 
> - Call hdmi_runtime_put() instead of hdmi_runtime_get() in error path
> ---
>  drivers/gpu/drm/omapdrm/dss/hdmi4.c | 10 +++++++++-
>  1 file changed, 9 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
> index cf6230eac31a..073fa462930a 100644
> --- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c
> +++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
> @@ -635,10 +635,14 @@ static int hdmi4_bind(struct device *dev, struct device *master, void *data)
>  
>  	hdmi->dss = dss;
>  
> -	r = hdmi_pll_init(dss, hdmi->pdev, &hdmi->pll, &hdmi->wp);
> +	r = hdmi_runtime_get(hdmi);
>  	if (r)
>  		return r;
>  
> +	r = hdmi_pll_init(dss, hdmi->pdev, &hdmi->pll, &hdmi->wp);
> +	if (r)
> +		goto err_runtime_put;
> +
>  	r = hdmi4_cec_init(hdmi->pdev, &hdmi->core, &hdmi->wp);
>  	if (r)
>  		goto err_pll_uninit;
> @@ -652,12 +656,16 @@ static int hdmi4_bind(struct device *dev, struct device *master, void *data)
>  	hdmi->debugfs = dss_debugfs_create_file(dss, "hdmi", hdmi_dump_regs,
>  					       hdmi);
>  
> +	hdmi_runtime_put(hdmi);
> +
>  	return 0;
>  
>  err_cec_uninit:
>  	hdmi4_cec_uninit(&hdmi->core);
>  err_pll_uninit:
>  	hdmi_pll_uninit(&hdmi->pll);
> +err_runtime_put:
> +	hdmi_runtime_put(hdmi);
>  	return r;
>  }
>  
> -- 
> Regards,
> 
> Laurent Pinchart
>
diff mbox series

Patch

diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
index cf6230eac31a..073fa462930a 100644
--- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c
+++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
@@ -635,10 +635,14 @@  static int hdmi4_bind(struct device *dev, struct device *master, void *data)
 
 	hdmi->dss = dss;
 
-	r = hdmi_pll_init(dss, hdmi->pdev, &hdmi->pll, &hdmi->wp);
+	r = hdmi_runtime_get(hdmi);
 	if (r)
 		return r;
 
+	r = hdmi_pll_init(dss, hdmi->pdev, &hdmi->pll, &hdmi->wp);
+	if (r)
+		goto err_runtime_put;
+
 	r = hdmi4_cec_init(hdmi->pdev, &hdmi->core, &hdmi->wp);
 	if (r)
 		goto err_pll_uninit;
@@ -652,12 +656,16 @@  static int hdmi4_bind(struct device *dev, struct device *master, void *data)
 	hdmi->debugfs = dss_debugfs_create_file(dss, "hdmi", hdmi_dump_regs,
 					       hdmi);
 
+	hdmi_runtime_put(hdmi);
+
 	return 0;
 
 err_cec_uninit:
 	hdmi4_cec_uninit(&hdmi->core);
 err_pll_uninit:
 	hdmi_pll_uninit(&hdmi->pll);
+err_runtime_put:
+	hdmi_runtime_put(hdmi);
 	return r;
 }