ARM: 7955/1: spinlock: ensure we have a compiler barrier before sev

[~andy/linux] / arch / arm / include / asm / spinlock.h

diff --git a/arch/arm/include/asm/spinlock.h b/arch/arm/include/asm/spinlock.h
index ef3c6072aa45345ae4594f22aebbe9a9ebc538f1..ac4bfae26702b0be3333c1184f1ac552f6c0eddd 100644 (file)
--- a/arch/arm/include/asm/spinlock.h
+++ b/arch/arm/include/asm/spinlock.h
@@ -37,18 +37,9 @@
 
 static inline void dsb_sev(void)
 {
-#if __LINUX_ARM_ARCH__ >= 7
-       __asm__ __volatile__ (
-               "dsb ishst\n"
-               SEV
-       );
-#else
-       __asm__ __volatile__ (
-               "mcr p15, 0, %0, c7, c10, 4\n"
-               SEV
-               : : "r" (0)
-       );
-#endif
+
+       dsb(ishst);
+       __asm__(SEV);
 }
 
 /*