linux-kernel - [PATCH 5/6] drm/panel/ls043t1le01: Use refcounted allocation in place of devm

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Message-Id: <20250708-b4-simple-panel-api-convert-july-v1-5-630902123ea1@redhat.com>
Date: Tue, 08 Jul 2025 15:35:17 -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 5/6] drm/panel/ls043t1le01: 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-sharp-ls043t1le01.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c
index 36abfa2e65e962af2a08aec3e63ba1077a2c43d4..610f37b844c2d1318ca876385d00f50a3e5410d6 100644
--- a/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c
+++ b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c
@@ -199,9 +199,6 @@ static int sharp_nt_panel_add(struct sharp_nt_panel *sharp_nt)
 		gpiod_set_value(sharp_nt->reset_gpio, 0);
 	}
 
-	drm_panel_init(&sharp_nt->base, &sharp_nt->dsi->dev,
-		       &sharp_nt_panel_funcs, DRM_MODE_CONNECTOR_DSI);
-
 	ret = drm_panel_of_backlight(&sharp_nt->base);
 	if (ret)
 		return ret;
@@ -230,9 +227,12 @@ static int sharp_nt_panel_probe(struct mipi_dsi_device *dsi)
 			MIPI_DSI_CLOCK_NON_CONTINUOUS |
 			MIPI_DSI_MODE_NO_EOT_PACKET;
 
-	sharp_nt = devm_kzalloc(&dsi->dev, sizeof(*sharp_nt), GFP_KERNEL);
-	if (!sharp_nt)
-		return -ENOMEM;
+	sharp_nt = devm_drm_panel_alloc(&dsi->dev, __typeof(*sharp_nt), base,
+					&sharp_nt_panel_funcs,
+					DRM_MODE_CONNECTOR_DSI);
+
+	if (IS_ERR(sharp_nt))
+		return PTR_ERR(sharp_nt);
 
 	mipi_dsi_set_drvdata(dsi, sharp_nt);
 

-- 
2.48.1