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authorLad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>2021-12-21 20:53:20 +0300
committerWolfram Sang <wsa@kernel.org>2022-01-03 12:17:14 +0300
commitc3b2f911ac11892b672df7829becf28d3a830073 (patch)
treea80fa66c8898fa2410f0f16bad24eddadda51b13 /drivers/i2c
parent653becec6d568a28666f726ed4c84b10f3c09f5e (diff)
downloadlinux-c3b2f911ac11892b672df7829becf28d3a830073.tar.xz
i2c: bcm2835: Use platform_get_irq() to get the interrupt
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 <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/busses/i2c-bcm2835.c11
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/i2c/busses/i2c-bcm2835.c b/drivers/i2c/busses/i2c-bcm2835.c
index 37443edbf754..dfc534065595 100644
--- a/drivers/i2c/busses/i2c-bcm2835.c
+++ b/drivers/i2c/busses/i2c-bcm2835.c
@@ -402,7 +402,7 @@ 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;
@@ -452,12 +452,9 @@ 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);