Add a default ioremap function which was not provided in all
circumstances. (Only when CONFIG_PCI was set).
I have designs to use them in scatterlist.c where they'd likely never
be called without CONFIG_PCI set, but it is needed to compile. Thus,
if the function is ever hit it returns NULL.
Signed-off-by: Logan Gunthorpe <logang@xxxxxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
---
Thanks to Al Viro for pointing out this corner case in s390.
arch/s390/include/asm/io.h | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/s390/include/asm/io.h b/arch/s390/include/asm/io.h
index 437e9af..f4140d4 100644
--- a/arch/s390/include/asm/io.h
+++ b/arch/s390/include/asm/io.h
@@ -73,6 +73,17 @@ static inline void ioport_unmap(void __iomem *p)
#define __raw_writel zpci_write_u32
#define __raw_writeq zpci_write_u64
+#else
+
+static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
+{
+ return NULL;
+}
+
+static inline void iounmap(void __iomem *addr)
+{
+}
+
#endif /* CONFIG_PCI */
#include <asm-generic/io.h>
--
2.1.4
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