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-rw-r--r--include/linux/io-mapping.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h
index c81ed2ac16bd..e44e84f0156c 100644
--- a/include/linux/io-mapping.h
+++ b/include/linux/io-mapping.h
@@ -117,6 +117,8 @@ io_mapping_unmap(void __iomem *vaddr)
#else
+#include <linux/uaccess.h>
+
/* this struct isn't actually defined anywhere */
struct io_mapping;
@@ -138,12 +140,14 @@ static inline void __iomem *
io_mapping_map_atomic_wc(struct io_mapping *mapping,
unsigned long offset)
{
+ pagefault_disable();
return ((char __force __iomem *) mapping) + offset;
}
static inline void
io_mapping_unmap_atomic(void __iomem *vaddr)
{
+ pagefault_enable();
}
/* Non-atomic map/unmap */