Use existing helper instead of manually coding it.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
---
 drivers/gpu/drm/panel/Kconfig                    |  1 +
 drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c | 19 ++-----------------
 2 files changed, 3 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index d6863b28ddc5..ba527b4d7737 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -337,6 +337,7 @@ config DRM_PANEL_JADARD_JD9365DA_H3
 	depends on OF
 	depends on DRM_MIPI_DSI
 	depends on BACKLIGHT_CLASS_DEVICE
+	select DRM_KMS_HELPER
 	help
 	  Say Y here if you want to enable support for Jadard JD9365DA-H3
 	  WXGA MIPI DSI panel. The panel support TFT dot matrix LCD with
diff --git a/drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c b/drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c
index c33c611e03c0..1884ad2404cd 100644
--- a/drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c
+++ b/drivers/gpu/drm/panel/panel-jadard-jd9365da-h3.c
@@ -12,6 +12,7 @@
 #include <drm/drm_modes.h>
 #include <drm/drm_panel.h>
 #include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
 
 #include <linux/gpio/consumer.h>
 #include <linux/delay.h>
@@ -149,24 +150,8 @@ static int jadard_get_modes(struct drm_panel *panel,
 			    struct drm_connector *connector)
 {
 	struct jadard *jadard = panel_to_jadard(panel);
-	const struct drm_display_mode *desc_mode = &jadard->desc->mode;
-	struct drm_display_mode *mode;
-
-	mode = drm_mode_duplicate(connector->dev, desc_mode);
-	if (!mode) {
-		DRM_DEV_ERROR(&jadard->dsi->dev, "failed to add mode %ux%ux@%u\n",
-			      desc_mode->hdisplay, desc_mode->vdisplay,
-			      drm_mode_vrefresh(desc_mode));
-		return -ENOMEM;
-	}
-
-	drm_mode_set_name(mode);
-	drm_mode_probed_add(connector, mode);
-
-	connector->display_info.width_mm = mode->width_mm;
-	connector->display_info.height_mm = mode->height_mm;
 
-	return 1;
+	return drm_connector_helper_get_modes_fixed(connector, &jadard->desc->mode);
 }
 
 static enum drm_panel_orientation jadard_panel_get_orientation(struct drm_panel *panel)

-- 
2.47.3