From: Philippe Mathieu-Daudé <philmd@redhat.com>

Both functions are called by MemoryRegionOps.[read/write] handlers
with unsigned 'size' argument. Both functions call
pci_host_config_[read/write]_common() which expect a uint32_t 'len'
parameter (also unsigned).
Since it is pointless (and confuse) to use a signed value, use a
unsigned type.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191216002134.18279-3-philmd@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 include/hw/pci/pci_host.h | 4 ++--
 hw/pci/pci_host.c         | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/hw/pci/pci_host.h b/include/hw/pci/pci_host.h
index ba31595fc7..9ce088bd13 100644
--- a/include/hw/pci/pci_host.h
+++ b/include/hw/pci/pci_host.h
@@ -62,8 +62,8 @@ void pci_host_config_write_common(PCIDevice *pci_dev, uint32_t addr,
 uint32_t pci_host_config_read_common(PCIDevice *pci_dev, uint32_t addr,
                                      uint32_t limit, uint32_t len);
 
-void pci_data_write(PCIBus *s, uint32_t addr, uint32_t val, int len);
-uint32_t pci_data_read(PCIBus *s, uint32_t addr, int len);
+void pci_data_write(PCIBus *s, uint32_t addr, uint32_t val, unsigned len);
+uint32_t pci_data_read(PCIBus *s, uint32_t addr, unsigned len);
 
 extern const MemoryRegionOps pci_host_conf_le_ops;
 extern const MemoryRegionOps pci_host_conf_be_ops;
diff --git a/hw/pci/pci_host.c b/hw/pci/pci_host.c
index 0958d157de..ce7bcdb1d5 100644
--- a/hw/pci/pci_host.c
+++ b/hw/pci/pci_host.c
@@ -106,7 +106,7 @@ uint32_t pci_host_config_read_common(PCIDevice *pci_dev, uint32_t addr,
     return ret;
 }
 
-void pci_data_write(PCIBus *s, uint32_t addr, uint32_t val, int len)
+void pci_data_write(PCIBus *s, uint32_t addr, uint32_t val, unsigned len)
 {
     PCIDevice *pci_dev = pci_dev_find_by_addr(s, addr);
     uint32_t config_addr = addr & (PCI_CONFIG_SPACE_SIZE - 1);
@@ -119,7 +119,7 @@ void pci_data_write(PCIBus *s, uint32_t addr, uint32_t val, int len)
                                  val, len);
 }
 
-uint32_t pci_data_read(PCIBus *s, uint32_t addr, int len)
+uint32_t pci_data_read(PCIBus *s, uint32_t addr, unsigned len)
 {
     PCIDevice *pci_dev = pci_dev_find_by_addr(s, addr);
     uint32_t config_addr = addr & (PCI_CONFIG_SPACE_SIZE - 1);
-- 
MST