From 0b01811fc19350a635b786ccd0ca95703783a69b Mon Sep 17 00:00:00 2001 From: Lad Prabhakar Date: Tue, 21 Dec 2021 17:53:20 +0000 Subject: [PATCH] i2c: bcm2835: Use platform_get_irq() to get the interrupt [ Upstream commit c3b2f911ac11892b672df7829becf28d3a830073 ] platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static allocation of IRQ resources in DT core code, this causes an issue when using hierarchical interrupt domains using "interrupts" property in the node as this bypasses the hierarchical setup and messes up the irq chaining. In preparation for removal of static setup of IRQ resource from DT core code use platform_get_irq(). Signed-off-by: Lad Prabhakar Reviewed-by: Florian Fainelli Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin --- drivers/i2c/busses/i2c-bcm2835.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/i2c/busses/i2c-bcm2835.c b/drivers/i2c/busses/i2c-bcm2835.c index ad3b124..5149454 100644 --- a/drivers/i2c/busses/i2c-bcm2835.c +++ b/drivers/i2c/busses/i2c-bcm2835.c @@ -407,7 +407,7 @@ static const struct i2c_adapter_quirks bcm2835_i2c_quirks = { static int bcm2835_i2c_probe(struct platform_device *pdev) { struct bcm2835_i2c_dev *i2c_dev; - struct resource *mem, *irq; + struct resource *mem; int ret; struct i2c_adapter *adap; struct clk *mclk; @@ -457,12 +457,9 @@ static int bcm2835_i2c_probe(struct platform_device *pdev) return ret; } - irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (!irq) { - dev_err(&pdev->dev, "No IRQ resource\n"); - return -ENODEV; - } - i2c_dev->irq = irq->start; + i2c_dev->irq = platform_get_irq(pdev, 0); + if (i2c_dev->irq < 0) + return i2c_dev->irq; ret = request_irq(i2c_dev->irq, bcm2835_i2c_isr, IRQF_SHARED, dev_name(&pdev->dev), i2c_dev); -- 2.7.4