[v2] drm: xlnx: zynqmp_dpsub: fix hotplug detection

[PATCH v2] drm: xlnx: zynqmp_dpsub: fix hotplug detection

Posted by Steffen Dirkwinkel 3 weeks, 6 days ago

From: Steffen Dirkwinkel <s.dirkwinkel@beckhoff.com>

drm_kms_helper_poll_init needs to be called after zynqmp_dpsub_kms_init.
zynqmp_dpsub_kms_init creates the connector and without it we don't
enable hotplug detection.

Fixes: eb2d64bfcc17 ("drm: xlnx: zynqmp_dpsub: Report HPD through the bridge")
Cc: stable@vger.kernel.org
Signed-off-by: Steffen Dirkwinkel <s.dirkwinkel@beckhoff.com>
---
 drivers/gpu/drm/xlnx/zynqmp_kms.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/xlnx/zynqmp_kms.c b/drivers/gpu/drm/xlnx/zynqmp_kms.c
index bd1368df7870..311397cee5ca 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_kms.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_kms.c
@@ -509,12 +509,12 @@ int zynqmp_dpsub_drm_init(struct zynqmp_dpsub *dpsub)
 	if (ret)
 		return ret;
 
-	drm_kms_helper_poll_init(drm);
-
 	ret = zynqmp_dpsub_kms_init(dpsub);
 	if (ret < 0)
 		goto err_poll_fini;
 
+	drm_kms_helper_poll_init(drm);
+
 	/* Reset all components and register the DRM device. */
 	drm_mode_config_reset(drm);
 
-- 
2.47.0

Re: [PATCH v2] drm: xlnx: zynqmp_dpsub: fix hotplug detection

Posted by Tomi Valkeinen 3 weeks, 4 days ago

Hi,

On 28/10/2024 15:42, Steffen Dirkwinkel wrote:
> From: Steffen Dirkwinkel <s.dirkwinkel@beckhoff.com>
> 
> drm_kms_helper_poll_init needs to be called after zynqmp_dpsub_kms_init.
> zynqmp_dpsub_kms_init creates the connector and without it we don't
> enable hotplug detection.
> 
> Fixes: eb2d64bfcc17 ("drm: xlnx: zynqmp_dpsub: Report HPD through the bridge")
> Cc: stable@vger.kernel.org
> Signed-off-by: Steffen Dirkwinkel <s.dirkwinkel@beckhoff.com>
> ---
>   drivers/gpu/drm/xlnx/zynqmp_kms.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/xlnx/zynqmp_kms.c b/drivers/gpu/drm/xlnx/zynqmp_kms.c
> index bd1368df7870..311397cee5ca 100644
> --- a/drivers/gpu/drm/xlnx/zynqmp_kms.c
> +++ b/drivers/gpu/drm/xlnx/zynqmp_kms.c
> @@ -509,12 +509,12 @@ int zynqmp_dpsub_drm_init(struct zynqmp_dpsub *dpsub)
>   	if (ret)
>   		return ret;
>   
> -	drm_kms_helper_poll_init(drm);
> -
>   	ret = zynqmp_dpsub_kms_init(dpsub);
>   	if (ret < 0)
>   		goto err_poll_fini;
>   
> +	drm_kms_helper_poll_init(drm);
> +
>   	/* Reset all components and register the DRM device. */
>   	drm_mode_config_reset(drm);
>   

Thanks, will apply to drm-misc-next.

Btw, don't send a fixed version with the same version number as the last 
one. Tools get confused...

  Tomi