linux-kernel - [PATCH 3/6] rtc: lpc32xx: simplify IRQ setup

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Date:   Tue,  9 Apr 2019 12:16:28 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     linux-rtc@...r.kernel.org
Cc:     Vladimir Zapolskiy <vz@...ia.com>,
        Sylvain Lemieux <slemieux.tyco@...il.com>,
        linux-kernel@...r.kernel.org,
        Alexandre Belloni <alexandre.belloni@...tlin.com>
Subject: [PATCH 3/6] rtc: lpc32xx: simplify IRQ setup

Move the optional IRQ setup to a single location.

Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
---
 drivers/rtc/rtc-lpc32xx.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/drivers/rtc/rtc-lpc32xx.c b/drivers/rtc/rtc-lpc32xx.c
index f9e899fc4889..652b969158d4 100644
--- a/drivers/rtc/rtc-lpc32xx.c
+++ b/drivers/rtc/rtc-lpc32xx.c
@@ -199,21 +199,13 @@ static int lpc32xx_rtc_probe(struct platform_device *pdev)
 {
 	struct resource *res;
 	struct lpc32xx_rtc *rtc;
-	int rtcirq, err;
+	int err;
 	u32 tmp;
 
-	rtcirq = platform_get_irq(pdev, 0);
-	if (rtcirq < 0) {
-		dev_warn(&pdev->dev, "Can't get interrupt resource\n");
-		rtcirq = -1;
-	}
-
 	rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
 	if (unlikely(!rtc))
 		return -ENOMEM;
 
-	rtc->irq = rtcirq;
-
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	rtc->rtc_base = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(rtc->rtc_base))
@@ -269,7 +261,10 @@ static int lpc32xx_rtc_probe(struct platform_device *pdev)
 	 * IRQ is enabled after device registration in case alarm IRQ
 	 * is pending upon suspend exit.
 	 */
-	if (rtc->irq >= 0) {
+	rtc->irq = platform_get_irq(pdev, 0);
+	if (rtc->irq < 0) {
+		dev_warn(&pdev->dev, "Can't get interrupt resource\n");
+	} else {
 		if (devm_request_irq(&pdev->dev, rtc->irq,
 				     lpc32xx_rtc_alarm_interrupt,
 				     0, pdev->name, rtc) < 0) {
-- 
2.20.1