linux-kernel - [PATCH v2] drm/tegra: dsi: Use devm_platform_ioremap_resource() in tegra_dsi

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Message-ID: <2ee2acc5-dce4-4e79-8f4c-f64f806f2e40@web.de>
Date: Tue, 6 Feb 2024 20:30:15 +0100
From: Markus Elfring <Markus.Elfring@....de>
To: linux-tegra@...r.kernel.org, dri-devel@...ts.freedesktop.org,
 kernel-janitors@...r.kernel.org, Daniel Vetter <daniel@...ll.ch>,
 David Airlie <airlied@...il.com>, Jonathan Hunter <jonathanh@...dia.com>,
 Mikko Perttunen <mperttunen@...dia.com>,
 Thierry Reding <thierry.reding@...il.com>
Cc: LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH v2] drm/tegra: dsi: Use devm_platform_ioremap_resource() in
 tegra_dsi_probe()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 6 Feb 2024 20:22:56 +0100

A wrapper function is available since the commit 7945f929f1a77a1c8887a97ca07f87626858ff42
("drivers: provide devm_platform_ioremap_resource()").

* Thus reuse existing functionality instead of keeping duplicate source code.

* Delete a local variable which became unnecessary with this refactoring.


This issue was transformed by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---

v2:
The transformation pattern was adjusted based on advices by known contributors.

Examples:
* Douglas Anderson
* Geert Uytterhoeven
* Robin Murphy


 drivers/gpu/drm/tegra/dsi.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c
index fbfe92a816d4..f9b6b5428b66 100644
--- a/drivers/gpu/drm/tegra/dsi.c
+++ b/drivers/gpu/drm/tegra/dsi.c
@@ -1562,7 +1562,6 @@ static int tegra_dsi_ganged_probe(struct tegra_dsi *dsi)
 static int tegra_dsi_probe(struct platform_device *pdev)
 {
 	struct tegra_dsi *dsi;
-	struct resource *regs;
 	int err;

 	dsi = devm_kzalloc(&pdev->dev, sizeof(*dsi), GFP_KERNEL);
@@ -1624,8 +1623,7 @@ static int tegra_dsi_probe(struct platform_device *pdev)
 		return err;
 	}

-	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	dsi->regs = devm_ioremap_resource(&pdev->dev, regs);
+	dsi->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(dsi->regs))
 		return PTR_ERR(dsi->regs);

--
2.43.0