linux-kernel - [PATCH] pinctrl: iproc: improve error handling

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Message-Id: <20191002220034.2034-1-chris.packham@alliedtelesis.co.nz>
Date:   Thu,  3 Oct 2019 11:00:33 +1300
From:   Chris Packham <chris.packham@...iedtelesis.co.nz>
To:     linus.walleij@...aro.org, rjui@...adcom.com, sbranden@...adcom.com,
        bcm-kernel-feedback-list@...adcom.com,
        rayagonda.kokatanur@...adcom.com, li.jin@...adcom.com
Cc:     linux-gpio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Chris Packham <chris.packham@...iedtelesis.co.nz>
Subject: [PATCH] pinctrl: iproc: improve error handling

platform_get_irq() can return an error code. Allow for this when getting
the irq.  While we're here use the dev_name(dev) for the irqc->name so
that we get unique names when we have multiple instances of this driver.

Signed-off-by: Chris Packham <chris.packham@...iedtelesis.co.nz>
---
Noticed this while debugging another problem.

 drivers/pinctrl/bcm/pinctrl-iproc-gpio.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c b/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c
index 6f7d3a2f2e97..c24d49d436ce 100644
--- a/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c
+++ b/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c
@@ -853,12 +853,12 @@ static int iproc_gpio_probe(struct platform_device *pdev)
 
 	/* optional GPIO interrupt support */
 	irq = platform_get_irq(pdev, 0);
-	if (irq) {
+	if (irq > 0) {
 		struct irq_chip *irqc;
 		struct gpio_irq_chip *girq;
 
 		irqc = &chip->irqchip;
-		irqc->name = "bcm-iproc-gpio";
+		irqc->name = dev_name(dev);
 		irqc->irq_ack = iproc_gpio_irq_ack;
 		irqc->irq_mask = iproc_gpio_irq_mask;
 		irqc->irq_unmask = iproc_gpio_irq_unmask;
-- 
2.23.0