linux-kernel - [PATCH v2] irqchip/ls-scfg-msi: Use device_get_match

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Message-ID: <20231020130255.2954415-3-robh@kernel.org>
Date:   Fri, 20 Oct 2023 08:02:56 -0500
From:   Rob Herring <robh@...nel.org>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     linux-kernel@...r.kernel.org,
        Vladimir Oltean <vladimir.oltean@....com>
Subject: [PATCH v2] irqchip/ls-scfg-msi: Use device_get_match_data()

Use preferred device_get_match_data() instead of of_match_device() to
get the driver match data in a single step without the unnecessary
intermediate match pointer. With this, adjust the includes to
explicitly include the correct headers. That also serves as
preparation to remove implicit includes within the DT headers.
of_platform.h currently includes platform_device.h among others.

Signed-off-by: Rob Herring <robh@...nel.org>
---
v2:
 - Expand commit message
---
 drivers/irqchip/irq-ls-scfg-msi.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/irqchip/irq-ls-scfg-msi.c b/drivers/irqchip/irq-ls-scfg-msi.c
index f31a262fe438..15cf80b46322 100644
--- a/drivers/irqchip/irq-ls-scfg-msi.c
+++ b/drivers/irqchip/irq-ls-scfg-msi.c
@@ -17,7 +17,8 @@
 #include <linux/irqdomain.h>
 #include <linux/of_irq.h>
 #include <linux/of_pci.h>
-#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/spinlock.h>
 
 #define MSI_IRQS_PER_MSIR	32
@@ -334,20 +335,17 @@ MODULE_DEVICE_TABLE(of, ls_scfg_msi_id);
 
 static int ls_scfg_msi_probe(struct platform_device *pdev)
 {
-	const struct of_device_id *match;
 	struct ls_scfg_msi *msi_data;
 	struct resource *res;
 	int i, ret;
 
-	match = of_match_device(ls_scfg_msi_id, &pdev->dev);
-	if (!match)
-		return -ENODEV;
-
 	msi_data = devm_kzalloc(&pdev->dev, sizeof(*msi_data), GFP_KERNEL);
 	if (!msi_data)
 		return -ENOMEM;
 
-	msi_data->cfg = (struct ls_scfg_msi_cfg *) match->data;
+	msi_data->cfg = (struct ls_scfg_msi_cfg *)device_get_match_data(&pdev->dev);
+	if (!msi_data->cfg)
+		return -ENODEV;
 
 	msi_data->regs = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
 	if (IS_ERR(msi_data->regs)) {
-- 
2.42.0