linux-kernel - [PATCH 14/14] drm/panel/boe-himax8279d: Use refcounted allocation in place of devm

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Message-Id: <20250710-b4-driver-convert-last-part-july-v1-14-de73ba81b2f5@redhat.com>
Date: Thu, 10 Jul 2025 23:31:25 -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>, 
 Florian Fainelli <florian.fainelli@...adcom.com>, 
 Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>, 
 Sumit Semwal <sumit.semwal@...aro.org>, 
 Casey Connolly <casey.connolly@...aro.org>, 
 Jerry Han <hanxu5@...qin.corp-partner.google.com>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 linux-rpi-kernel@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org, 
 Anusha Srivatsa <asrivats@...hat.com>
Subject: [PATCH 14/14] drm/panel/boe-himax8279d: 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-boe-himax8279d.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-boe-himax8279d.c b/drivers/gpu/drm/panel/panel-boe-himax8279d.c
index df746baae301cf70d9fa940b36aae2712e73b3e3..4a8560b4b899a4da3b307dcb43682303d0543813 100644
--- a/drivers/gpu/drm/panel/panel-boe-himax8279d.c
+++ b/drivers/gpu/drm/panel/panel-boe-himax8279d.c
@@ -847,9 +847,6 @@ static int panel_add(struct panel_info *pinfo)
 						 "failed to get enable gpio\n");
 	}
 
-	drm_panel_init(&pinfo->base, dev, &panel_funcs,
-		       DRM_MODE_CONNECTOR_DSI);
-
 	ret = drm_panel_of_backlight(&pinfo->base);
 	if (ret)
 		return ret;
@@ -865,9 +862,11 @@ static int panel_probe(struct mipi_dsi_device *dsi)
 	const struct panel_desc *desc;
 	int err;
 
-	pinfo = devm_kzalloc(&dsi->dev, sizeof(*pinfo), GFP_KERNEL);
-	if (!pinfo)
-		return -ENOMEM;
+	pinfo = devm_drm_panel_alloc(&dsi->dev, __typeof(*pinfo), base,
+				     &panel_funcs, DRM_MODE_CONNECTOR_DSI);
+
+	if (IS_ERR(pinfo))
+		return PTR_ERR(pinfo);
 
 	desc = of_device_get_match_data(&dsi->dev);
 	dsi->mode_flags = desc->mode_flags;

-- 
2.48.1