linux-kernel - [PATCH 41/46] panel/widechips-ws2401: Use refcounted allocation in place of devm

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Message-Id: <20250403-b4-drm_panel_mass_driver_convert_part3-v1-41-965b15ad5b8e@redhat.com>
Date: Thu, 03 Apr 2025 16:21:12 -0400
From: Anusha Srivatsa <asrivats@...hat.com>
To: Neil Armstrong <neil.armstrong@...aro.org>, 
 Jessica Zhang <quic_jesszhan@...cinc.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>, 
 Robert Chiras <robert.chiras@....com>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Markuss Broks <markuss.broks@...il.com>, 
 Artur Weber <aweber.kernel@...il.com>, 
 Dzmitry Sankouski <dsankouski@...il.com>, 
 Jagan Teki <jagan@...rulasolutions.com>, 
 Guido Günther <agx@...xcpu.org>, 
 Purism Kernel Team <kernel@...i.sm>, Ondrej Jirman <megi@....cz>, 
 Sasha Finkelstein <fnkl.kernel@...il.com>, Janne Grunau <j@...nau.net>, 
 Michael Trimarchi <michael@...rulasolutions.com>, 
 Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 asahi@...ts.linux.dev, Anusha Srivatsa <asrivats@...hat.com>
Subject: [PATCH 41/46] panel/widechips-ws2401: Use refcounted allocation in
 place of devm_kzalloc()

Move to using the new API devm_drm_panel_alloc() to allocate the
panel.

Signed-off-by: Anusha Srivatsa <asrivats@...hat.com>
---
 drivers/gpu/drm/panel/panel-widechips-ws2401.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-widechips-ws2401.c b/drivers/gpu/drm/panel/panel-widechips-ws2401.c
index 2591ff8f0d4e8b84b7283718bf05684e8d44d1f5..bb3e5e4306ee2cb5e95b812775b4418d672d91d5 100644
--- a/drivers/gpu/drm/panel/panel-widechips-ws2401.c
+++ b/drivers/gpu/drm/panel/panel-widechips-ws2401.c
@@ -347,9 +347,11 @@ static int ws2401_probe(struct spi_device *spi)
 	struct ws2401 *ws;
 	int ret;
 
-	ws = devm_kzalloc(dev, sizeof(*ws), GFP_KERNEL);
-	if (!ws)
-		return -ENOMEM;
+	ws = devm_drm_panel_alloc(dev, struct ws2401, panel, &ws2401_drm_funcs,
+				   DRM_MODE_CONNECTOR_DPI);
+	if (IS_ERR(ws))
+		return PTR_ERR(ws);
+
 	ws->dev = dev;
 
 	/*
@@ -379,9 +381,6 @@ static int ws2401_probe(struct spi_device *spi)
 	ws2401_read_mtp_id(ws);
 	ws2401_power_off(ws);
 
-	drm_panel_init(&ws->panel, dev, &ws2401_drm_funcs,
-		       DRM_MODE_CONNECTOR_DPI);
-
 	ret = drm_panel_of_backlight(&ws->panel);
 	if (ret)
 		return dev_err_probe(dev, ret,

-- 
2.48.1