xen: Don't use memory_region_init_ram_nomigrate() in pci_assign_dev_load_option_rom()

The xen pci_assign_dev_load_option_rom() currently creates a RAM
memory region with memory_region_init_ram_nomigrate(), and then
manually registers it with vmstate_register_ram(). In fact for
its only callsite, the 'owner' pointer we use for the init call
and the '&dev->qdev' pointer we use for the vmstate_register_ram()
call refer to the same object. Simplify the function to only
take a pointer to the device once instead of twice, and use
memory_region_init_ram() which automatically does the vmstate
register for us.

Acked-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/hw/xen/xen_pt.h b/hw/xen/xen_pt.h
index aa39a9aa5f..dbee3308fd 100644
--- a/hw/xen/xen_pt.h
+++ b/hw/xen/xen_pt.h
@@ -319,7 +319,7 @@ static inline bool xen_pt_has_msix_mapping(XenPCIPassthroughState *s, int bar)
 }
 
 extern void *pci_assign_dev_load_option_rom(PCIDevice *dev,
-                                            struct Object *owner, int *size,
+                                            int *size,
                                             unsigned int domain,
                                             unsigned int bus, unsigned int slot,
                                             unsigned int function);