lib: add NO_GENERIC_PCI_IOPORT_MAP

Some architectures need to override the way
IO port mapping is done on PCI devices.
Supply a generic macro that calls
ioport_map, and make it possible for architectures
to override.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>

2 files changed, 4 insertions, 1 deletions

diff --git a/lib/Kconfig b/lib/Kconfig
index 169eb7c598e..1df13883481 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -19,6 +19,9 @@ config RATIONAL
 config GENERIC_FIND_FIRST_BIT
         bool
 
+config NO_GENERIC_PCI_IOPORT_MAP
+        bool
+
 config GENERIC_PCI_IOMAP
         bool
 
diff --git a/lib/pci_iomap.c b/lib/pci_iomap.c
index 4b0fdc22e68..0d83ea8a960 100644
--- a/lib/pci_iomap.c
+++ b/lib/pci_iomap.c
@@ -34,7 +34,7 @@ void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
         if (maxlen && len > maxlen)
                 len = maxlen;
         if (flags & IORESOURCE_IO)
-                return ioport_map(start, len);
+                return __pci_ioport_map(dev, start, len);
         if (flags & IORESOURCE_MEM) {
                 if (flags & IORESOURCE_CACHEABLE)
                         return ioremap(start, len);