[PATCH] winbond IDE depends on IDEDMA

[pandora-kernel.git] / include / asm-s390 / lowcore.h

diff --git a/include/asm-s390/lowcore.h b/include/asm-s390/lowcore.h
index 06583ed..74f7389 100644 (file)
--- a/include/asm-s390/lowcore.h
+++ b/include/asm-s390/lowcore.h
@@ -362,6 +362,14 @@ static inline void set_prefix(__u32 address)
        asm volatile("spx %0" : : "m" (address) : "memory");
 }
 
+static inline __u32 store_prefix(void)
+{
+       __u32 address;
+
+       asm volatile("stpx %0" : "=m" (address));
+       return address;
+}
+
 #define __PANIC_MAGIC           0xDEADC0DE
 
 #endif