linux-kernel - [PATCH v3 2/4] irqchip/qcom-pdc: Switch to using IRQCHIP_PLATFORM

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Date:   Fri, 17 Jul 2020 17:06:35 -0700
From:   Saravana Kannan <saravanak@...gle.com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <maz@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Saravana Kannan <saravanak@...gle.com>, kernel-team@...roid.com,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-arm-msm@...r.kernel.org,
        John Stultz <john.stultz@...aro.org>,
        Hanks Chen <hanks.chen@...iatek.com>,
        CC Hwang <cc.hwang@...iatek.com>,
        Loda Chou <loda.chou@...iatek.com>
Subject: [PATCH v3 2/4] irqchip/qcom-pdc: Switch to using IRQCHIP_PLATFORM_DRIVER
 helper macros

Switch the driver to use the helper macros. In addition to reducing the
number of lines, this also adds module unload protection (if the driver
is compiled as a module) by switching from module_platform_driver to
builtin_platform_driver.

Signed-off-by: Saravana Kannan <saravanak@...gle.com>
---
 drivers/irqchip/qcom-pdc.c | 26 +++-----------------------
 1 file changed, 3 insertions(+), 23 deletions(-)

diff --git a/drivers/irqchip/qcom-pdc.c b/drivers/irqchip/qcom-pdc.c
index 5b624e3295e4..c1c5dfad57cc 100644
--- a/drivers/irqchip/qcom-pdc.c
+++ b/drivers/irqchip/qcom-pdc.c
@@ -432,28 +432,8 @@ static int qcom_pdc_init(struct device_node *node, struct device_node *parent)
 	return ret;
 }
 
-static int qcom_pdc_probe(struct platform_device *pdev)
-{
-	struct device_node *np = pdev->dev.of_node;
-	struct device_node *parent = of_irq_find_parent(np);
-
-	return qcom_pdc_init(np, parent);
-}
-
-static const struct of_device_id qcom_pdc_match_table[] = {
-	{ .compatible = "qcom,pdc" },
-	{}
-};
-MODULE_DEVICE_TABLE(of, qcom_pdc_match_table);
-
-static struct platform_driver qcom_pdc_driver = {
-	.probe = qcom_pdc_probe,
-	.driver = {
-		.name = "qcom-pdc",
-		.of_match_table = qcom_pdc_match_table,
-		.suppress_bind_attrs = true,
-	},
-};
-module_platform_driver(qcom_pdc_driver);
+IRQCHIP_PLATFORM_DRIVER_BEGIN(qcom_pdc)
+IRQCHIP_MATCH("qcom,pdc", qcom_pdc_init)
+IRQCHIP_PLATFORM_DRIVER_END(qcom_pdc)
 MODULE_DESCRIPTION("Qualcomm Technologies, Inc. Power Domain Controller");
 MODULE_LICENSE("GPL v2");
-- 
2.28.0.rc0.105.gf9edc3c819-goog