linux-kernel - [PATCH 4/6] drm/panel/kd070fhfid015: Use refcounted allocation in place of devm

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Message-Id: <20250708-b4-simple-panel-api-convert-july-v1-4-630902123ea1@redhat.com>
Date: Tue, 08 Jul 2025 15:35:16 -0500
From: Anusha Srivatsa <asrivats@...hat.com>
To: Neil Armstrong <neil.armstrong@...aro.org>, 
 Jessica Zhang <jessica.zhang@....qualcomm.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>
Cc: Geert Uytterhoeven <geert@...ux-m68k.org>, 
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 Anusha Srivatsa <asrivats@...hat.com>
Subject: [PATCH 4/6] drm/panel/kd070fhfid015: Use refcounted allocation in
 place of devm_kzalloc()

Move to using the new API devm_drm_panel_alloc() to allocate the
panel. In the call to the new API, avoid using explicit type and use
__typeof() for more type safety.

Signed-off-by: Anusha Srivatsa <asrivats@...hat.com>
---
 drivers/gpu/drm/panel/panel-startek-kd070fhfid015.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-startek-kd070fhfid015.c b/drivers/gpu/drm/panel/panel-startek-kd070fhfid015.c
index c0c95355b74350843d5703f1779d88b04f4337f5..e3d53939ce76a29966b99f18ca54dc16790200de 100644
--- a/drivers/gpu/drm/panel/panel-startek-kd070fhfid015.c
+++ b/drivers/gpu/drm/panel/panel-startek-kd070fhfid015.c
@@ -286,9 +286,6 @@ static int stk_panel_add(struct stk_panel *stk)
 		return ret;
 	}
 
-	drm_panel_init(&stk->base, &stk->dsi->dev, &stk_panel_funcs,
-		       DRM_MODE_CONNECTOR_DSI);
-
 	drm_panel_add(&stk->base);
 
 	return 0;
@@ -303,9 +300,12 @@ static int stk_panel_probe(struct mipi_dsi_device *dsi)
 	dsi->format = MIPI_DSI_FMT_RGB888;
 	dsi->mode_flags = (MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM);
 
-	stk = devm_kzalloc(&dsi->dev, sizeof(*stk), GFP_KERNEL);
-	if (!stk)
-		return -ENOMEM;
+	stk = devm_drm_panel_alloc(&dsi->dev, __typeof(*stk), base,
+				   &stk_panel_funcs,
+				   DRM_MODE_CONNECTOR_DSI);
+
+	if (IS_ERR(stk))
+		return PTR_ERR(stk);
 
 	mipi_dsi_set_drvdata(dsi, stk);
 

-- 
2.48.1