linux-kernel - [PATCH] drm/bridge/synopsys: dsi: Use devm_platform_ioremap_resource() in __dw_mipi_dsi

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Message-ID: <e0d7b7d7-3e89-8b3f-04ed-0b14806e66f7@web.de>
Date:   Sat, 21 Sep 2019 20:20:20 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     dri-devel@...ts.freedesktop.org,
        Andrzej Hajda <a.hajda@...sung.com>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Heiko Stübner <heiko@...ech.de>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Jonas Karlman <jonas@...boo.se>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Matt Redfearn <matt.redfearn@...nci.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Nickey Yang <nickey.yang@...k-chips.com>,
        Philippe Cornu <philippe.cornu@...com>,
        Sam Ravnborg <sam@...nborg.org>,
        Yannick Fertré <yannick.fertre@...com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH] drm/bridge/synopsys: dsi: Use
 devm_platform_ioremap_resource() in __dw_mipi_dsi_probe()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 21 Sep 2019 20:04:08 +0200

Simplify this function implementation by using a known wrapper function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
index 675442bfc1bd..6ada149af9ef 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
@@ -981,7 +981,6 @@ __dw_mipi_dsi_probe(struct platform_device *pdev,
 	struct device *dev = &pdev->dev;
 	struct reset_control *apb_rst;
 	struct dw_mipi_dsi *dsi;
-	struct resource *res;
 	int ret;

 	dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);
@@ -997,11 +996,7 @@ __dw_mipi_dsi_probe(struct platform_device *pdev,
 	}

 	if (!plat_data->base) {
-		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-		if (!res)
-			return ERR_PTR(-ENODEV);
-
-		dsi->base = devm_ioremap_resource(dev, res);
+		dsi->base = devm_platform_ioremap_resource(pdev, 0);
 		if (IS_ERR(dsi->base))
 			return ERR_PTR(-ENODEV);

--
2.23.0