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From: Philipp Stanner <pstanner@redhat.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>,
	Lucas Stach <l.stach@pengutronix.de>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	David Airlie <airlied@gmail.com>,
	Daniel Vetter <daniel@ffwll.ch>,
	Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	NXP Linux Team <linux-imx@nxp.com>,
	Mark Brown <broonie@kernel.org>,
	Takashi Iwai <tiwai@suse.de>,
	David Gow <davidgow@google.com>,
	=?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig@pengutronix.de>
Cc: linux-kernel@vger.kernel.org,
	dri-devel@lists.freedesktop.org,
	linux-arm-kernel@lists.infradead.org,
	Philipp Stanner <pstanner@redhat.com>
Subject: [PATCH v2 2/2] drm/dcss: request memory region
Date: Mon,  8 Jan 2024 10:20:43 +0100
Message-ID: <20240108092042.16949-4-pstanner@redhat.com>
In-Reply-To: <20240108092042.16949-2-pstanner@redhat.com>
References: <20240108092042.16949-2-pstanner@redhat.com>
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The driver's memory regions are currently just ioremap()ed, but not
reserved through a request. That's not a bug, but having the request is
a little more robust.

Implement the region-request through the corresponding managed
devres-function.

Signed-off-by: Philipp Stanner <pstanner@redhat.com>
---
 drivers/gpu/drm/imx/dcss/dcss-dev.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/imx/dcss/dcss-dev.c b/drivers/gpu/drm/imx/dcss/dcss-dev.c
index 4f3af0dfb344..63dbb8d9c1b0 100644
--- a/drivers/gpu/drm/imx/dcss/dcss-dev.c
+++ b/drivers/gpu/drm/imx/dcss/dcss-dev.c
@@ -177,10 +177,11 @@ struct dcss_dev *dcss_dev_create(struct device *dev, bool hdmi_output)
 		return ERR_PTR(-ENODEV);
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(dev, "cannot get memory resource\n");
-		return ERR_PTR(-EINVAL);
+	res = devm_platform_get_and_request_resource(pdev, IORESOURCE_MEM, 
+						     0, "dcss");
+	if (IS_ERR(res)) {
+		dev_err(dev, "cannot get / request memory resource\n");
+		return res;
 	}
 
 	dcss = kzalloc(sizeof(*dcss), GFP_KERNEL);
-- 
2.43.0