[PATCH v9 01/12] Fix ioport_map() for !CONFIG_GENERIC_IOMAP cases.

[Liviu Dudau]

The inline version of ioport_map() that gets used when !CONFIG_GENERIC_IOMAP
is wrong. It returns a mapped (i.e. virtual) address that can start from
zero and completely ignores the PCI_IOBASE and IO_SPACE_LIMIT that most
architectures that use !CONFIG_GENERIC_MAP define.

Signed-off-by: Liviu Dudau <Liviu.Dudau@xxxxxxx>
Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
Tested-by: Tanmay Inamdar <tinamdar@xxxxxxx>
---
 include/asm-generic/io.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index 975e1cc..2e2161b 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -331,7 +331,7 @@ static inline void iounmap(void __iomem *addr)
 #ifndef CONFIG_GENERIC_IOMAP
 static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
 {
-	return (void __iomem *) port;
+	return (void __iomem *)(PCI_IOBASE + (port & IO_SPACE_LIMIT));
 }
 
 static inline void ioport_unmap(void __iomem *p)
-- 
2.0.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/