Commit 1dc5df13 authored by Roman Kisel's avatar Roman Kisel Committed by Wei Liu
Browse files

Drivers: hv: vmbus: Get the IRQ number from DeviceTree 



The VMBus driver uses ACPI for interrupt assignment on
arm64 hence it won't function in the VTL mode where only
DeviceTree can be used.

Update the VMBus driver to discover interrupt configuration
from DT.

Signed-off-by: default avatarRoman Kisel <romank@linux.microsoft.com>
Reviewed-by: default avatarMichael Kelley <mhklinux@outlook.com>
Link: https://lore.kernel.org/r/20250428210742.435282-9-romank@linux.microsoft.com


Signed-off-by: default avatarWei Liu <wei.liu@kernel.org>
Message-ID: <20250428210742.435282-9-romank@linux.microsoft.com>
parent 23aa0c35

drivers/hv/vmbus_drv.c

+30 −0
Original line number Diff line number Diff line
@@ -2465,6 +2465,31 @@ static int vmbus_acpi_add(struct platform_device *pdev) 
}

#endif



static int vmbus_set_irq(struct platform_device *pdev)

{

	struct irq_data *data;

	int irq;

	irq_hw_number_t hwirq;



	irq = platform_get_irq(pdev, 0);

	/* platform_get_irq() may not return 0. */

	if (irq < 0)

		return irq;



	data = irq_get_irq_data(irq);

	if (!data) {

		pr_err("No interrupt data for VMBus virq %d\n", irq);

		return -ENODEV;

	}

	hwirq = irqd_to_hwirq(data);



	vmbus_irq = irq;

	vmbus_interrupt = hwirq;

	pr_debug("VMBus virq %d, hwirq %d\n", vmbus_irq, vmbus_interrupt);



	return 0;

}



static int vmbus_device_add(struct platform_device *pdev)

{

	struct resource **cur_res = &hyperv_mmio;
@@ -2479,6 +2504,11 @@ static int vmbus_device_add(struct platform_device *pdev) 
	if (ret)

		return ret;



	if (!__is_defined(HYPERVISOR_CALLBACK_VECTOR))

		ret = vmbus_set_irq(pdev);

	if (ret)

		return ret;



	for_each_of_range(&parser, &range) {

		struct resource *res;