When the kernel is configured with no IORT support the compilation
issues the following warnings:

In file included from drivers/irqchip/irq-gic-v3-its-pci-msi.c:19:0:
include/linux/iort.h:28:33: warning: 'struct pci_dev' declared inside
parameter list
 u32 iort_pci_get_msi_rid(struct pci_dev *pdev, u32 req_id);
                                 ^
include/linux/iort.h:28:33: warning: its scope is only this definition
or declaration, which is probably not what you want
include/linux/iort.h:29:50: warning: 'struct pci_dev' declared inside
parameter list
 struct fwnode_handle *iort_pci_get_domain(struct pci_dev *pdev, u32
req_id);

This patch fixes the warnings with a struct pci_dev forward declaration
in the IORT header file.

Signed-off-by: Lorenzo Pieralisi <redacted>
Cc: Tomasz Nowicki <redacted>
---
 include/linux/iort.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/iort.h b/include/linux/iort.h
index 7441941..b15fe1a 100644
--- a/include/linux/iort.h
+++ b/include/linux/iort.h

@@ -21,6 +21,7 @@
 
 #include <linux/acpi.h>
 
+struct pci_dev;
 struct fwnode_handle;
 int iort_register_domain_token(int trans_id, struct fwnode_handle *fw_node);
 void iort_deregister_domain_token(int trans_id);

-- 
2.6.4