diff mbox series

media: camss-csiphy: Use platform_get_irq_byname() to get the interrupt

Message ID 20220210094936.23462-1-zhaoxiao@uniontech.com
State New
Headers show
Series media: camss-csiphy: Use platform_get_irq_byname() to get the interrupt | expand

Commit Message

zhaoxiao Feb. 10, 2022, 9:49 a.m. UTC
platform_get_resource_byname(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 bypassed the hierarchical setup and messed up the
irq chaining.

In preparation for removal of static setup of IRQ resource from DT core
code use platform_get_irq_byname().

Signed-off-by: zhaoxiao <zhaoxiao@uniontech.com>
---
 drivers/media/platform/qcom/camss/camss-csiphy.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)
diff mbox series

Patch

diff --git a/drivers/media/platform/qcom/camss/camss-csiphy.c b/drivers/media/platform/qcom/camss/camss-csiphy.c
index 24eec16197e7..92bdd1cd260f 100644
--- a/drivers/media/platform/qcom/camss/camss-csiphy.c
+++ b/drivers/media/platform/qcom/camss/camss-csiphy.c
@@ -568,7 +568,6 @@  int msm_csiphy_subdev_init(struct camss *camss,
 {
 	struct device *dev = camss->dev;
 	struct platform_device *pdev = to_platform_device(dev);
-	struct resource *r;
 	int i, j;
 	int ret;
 
@@ -610,19 +609,14 @@  int msm_csiphy_subdev_init(struct camss *camss,
 	}
 
 	/* Interrupt */
+	ret = platform_get_irq_byname(pdev, res->interrupt[0]);
+	if (ret < 0)
+		return ret;
 
-	r = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
-					 res->interrupt[0]);
-	if (!r) {
-		dev_err(dev, "missing IRQ\n");
-		return -EINVAL;
-	}
-
-	csiphy->irq = r->start;
 	snprintf(csiphy->irq_name, sizeof(csiphy->irq_name), "%s_%s%d",
 		 dev_name(dev), MSM_CSIPHY_NAME, csiphy->id);
 
-	ret = devm_request_irq(dev, csiphy->irq, csiphy->ops->isr,
+	ret = devm_request_irq(dev, ret, csiphy->ops->isr,
 			       IRQF_TRIGGER_RISING | IRQF_NO_AUTOEN,
 			       csiphy->irq_name, csiphy);
 	if (ret < 0) {