io-mapping: ensure io_mapping_map_atomic _is_ atomic

[pandora-kernel.git] / include / linux / io-mapping.h

diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h
index 8cdcc2a..1feeb52 100644 (file)
--- 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 */