linux-kernel - [PATCH v2] clocksource: em_sti: fix error return codes in em_sti

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Message-ID: <20170630061445.GA7854@embeddedgus>
Date:   Fri, 30 Jun 2017 01:14:45 -0500
From:   "Gustavo A. R. Silva" <garsilva@...eddedor.com>
To:     Frans Klaver <fransklaver@...il.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Subject: [PATCH v2] clocksource: em_sti: fix error return codes in
 em_sti_probe()

Propagate the return values of platform_get_irq and
devm_request_irq on failure.

Cc: Frans Klaver <fransklaver@...il.com>
Signed-off-by: Gustavo A. R. Silva <garsilva@...eddedor.com>
---
Changes in v2:
 Use 'ret' instead of 'irq' for taking the result of devm_request_irq.

 drivers/clocksource/em_sti.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/clocksource/em_sti.c b/drivers/clocksource/em_sti.c
index bc48cbf..269db74 100644
--- a/drivers/clocksource/em_sti.c
+++ b/drivers/clocksource/em_sti.c
@@ -305,7 +305,7 @@ static int em_sti_probe(struct platform_device *pdev)
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
 		dev_err(&pdev->dev, "failed to get irq\n");
-		return -EINVAL;
+		return irq;
 	}
 
 	/* map memory, let base point to the STI instance */
@@ -314,11 +314,12 @@ static int em_sti_probe(struct platform_device *pdev)
 	if (IS_ERR(p->base))
 		return PTR_ERR(p->base);
 
-	if (devm_request_irq(&pdev->dev, irq, em_sti_interrupt,
-			     IRQF_TIMER | IRQF_IRQPOLL | IRQF_NOBALANCING,
-			     dev_name(&pdev->dev), p)) {
+	ret = devm_request_irq(&pdev->dev, irq, em_sti_interrupt,
+			       IRQF_TIMER | IRQF_IRQPOLL | IRQF_NOBALANCING,
+			       dev_name(&pdev->dev), p);
+	if (ret) {
 		dev_err(&pdev->dev, "failed to request low IRQ\n");
-		return -ENOENT;
+		return ret;
 	}
 
 	/* get hold of clock */
-- 
2.5.0