x86: mark read_crX() asm code as volatile

[platform/adaptation/renesas_rcar/renesas_kernel.git] / include / asm-x86 / system_32.h

diff --git a/include/asm-x86/system_32.h b/include/asm-x86/system_32.h
index d84e593..1d6fb3a 100644 (file)
--- a/include/asm-x86/system_32.h
+++ b/include/asm-x86/system_32.h
@@ -142,7 +142,7 @@ static inline unsigned long native_read_cr4_safe(void)
 {
        unsigned long val;
        /* This could fault if %cr4 does not exist */
-       asm("1: movl %%cr4, %0          \n"
+       asm volatile("1: movl %%cr4, %0         \n"
                "2:                             \n"
                ".section __ex_table,\"a\"      \n"
                ".long 1b,2b                    \n"