[PATCH linux-next v2] arm64: PCI: Introduce pcibios_free_irq() helper function

[Yajun Deng <yajun.deng@linux.dev>]

pcibios_alloc_irq() will be called in pci_device_probe(), but there
hasn't pcibios_free_irq() in arm64 architecture correspond it.
pcibios_free_irq() is an empty weak function in drivers/pci/pci-driver.c.
So add pcibios_free_irq() for correspond it. This will be called
in pci_device_remove().

====================
v2: remove the change in pcibios_alloc_irq(), and modify the commit log.
====================

Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
---
 arch/arm64/kernel/pci.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm64/kernel/pci.c b/arch/arm64/kernel/pci.c
index 2276689b5411..6ffd92126f65 100644
--- a/arch/arm64/kernel/pci.c
+++ b/arch/arm64/kernel/pci.c
@@ -29,6 +29,13 @@ int pcibios_alloc_irq(struct pci_dev *dev)
 
 	return 0;
 }
+
+void pcibios_free_irq(struct pci_dev *dev)
+{
+	if (!acpi_disabled)
+		acpi_pci_irq_disable(dev);
+}
+
 #endif
 
 /*
-- 
2.32.0