From mboxrd@z Thu Jan 1 00:00:00 1970 From: arvind.yadav.cs@gmail.com (Arvind Yadav) Date: Sun, 19 Nov 2017 09:56:32 +0530 Subject: [PATCH 1/3 v3] mfd: ipaq-micro: Fix platform_get_irq's error checking Message-ID: <1bdd59d511e4acd23aea6af51d06b1cadf09a1b2.1511065331.git.arvind.yadav.cs@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The platform_get_irq() function returns negative if an error occurs. zero or positive number on success. platform_get_irq() error checking for zero is not correct. Signed-off-by: Arvind Yadav --- changes in v2 : Add failure case '<= 0' instead of '< 0'. If IRQ0 is not valid. changes in v3 : return -EINVAL insted of irq. drivers/mfd/ipaq-micro.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mfd/ipaq-micro.c b/drivers/mfd/ipaq-micro.c index cd762d0..176cf65 100644 --- a/drivers/mfd/ipaq-micro.c +++ b/drivers/mfd/ipaq-micro.c @@ -410,7 +410,7 @@ static int __init micro_probe(struct platform_device *pdev) micro_reset_comm(micro); irq = platform_get_irq(pdev, 0); - if (!irq) + if (irq <= 0) return -EINVAL; ret = devm_request_irq(&pdev->dev, irq, micro_serial_isr, IRQF_SHARED, "ipaq-micro", -- 2.7.4