IEC binary prefixes ease code review: the unit is explicit.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 hw/pci/pci_bridge.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/pci/pci_bridge.c b/hw/pci/pci_bridge.c
index 3ba3203f72..3789c17edc 100644
--- a/hw/pci/pci_bridge.c
+++ b/hw/pci/pci_bridge.c
@@ -423,14 +423,14 @@ int pci_bridge_qemu_reserve_cap_init(PCIDevice *dev, int cap_offset,
     }
 
     if (res_reserve.mem_non_pref != (uint64_t)-1 &&
-        res_reserve.mem_non_pref >= (1ULL << 32)) {
+        res_reserve.mem_non_pref >= 4 * GiB) {
         error_setg(errp,
                    "PCI resource reserve cap: mem-reserve must be less than 4G");
         return -EINVAL;
     }
 
     if (res_reserve.mem_pref_32 != (uint64_t)-1 &&
-        res_reserve.mem_pref_32 >= (1ULL << 32)) {
+        res_reserve.mem_pref_32 >= 4 * GiB) {
         error_setg(errp,
                    "PCI resource reserve cap: pref32-reserve  must be less than 4G");
         return -EINVAL;
-- 
2.21.3