drm: xlnx: zynqmp_dpsub: fix hotplug detection

commit 71ba1c9b1c717831920c3d432404ee5a707e04b4 upstream.

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>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241028134218.54727-1-lists@steffen.cc
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/xlnx/zynqmp_kms.c b/drivers/gpu/drm/xlnx/zynqmp_kms.c
index 4556af2faa0f191ef9da0a359eb81dae8fbe48c1..1565a7dd4f04d05702b51fdb31bd3c00983f4669 100644 (file)
--- 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);