Compiling with binutils 2.21 needs to have this sec arch_extention
gcc does not know march=armv7-a+sec and if we use -Wa,-march=armv7-a+sec
then assembler does not honor it because march=armv7-a when specfied to
gcc driver adds march=armv7-a *before*  -Wa,-march=armv7-a+sec when calling
assembler. There is no way getting around that :(

So what do we do ? We take the fight to the beast
 We add the .arch_extention where its added in inline
assembly.

This file is added by one of local OE patches these patches are not
(upstream _yet_ or discarded) dont know

-Khem


Index: git/arch/arm/kernel/sysfs_v7.c
===================================================================
--- git.orig/arch/arm/kernel/sysfs_v7.c
+++ git/arch/arm/kernel/sysfs_v7.c
@@ -76,7 +76,8 @@ static ssize_t aux_ctl_store(struct sys_
 	asm ("mrc p15, 0, %0, c1, c0, 1" : "=r"(val));
 	SETBITS(val, 0xff8, new);
 	val &= ~2;
-	asm ("mov r0,  %0	\n\t"
+	asm (".arch_extension sec\n\t"
+	     "mov r0,  %0	\n\t"
 	     "mov r12, #3	\n\t"
 	     "smc #0		\n\t"
 	     :: "r"(val) : "r0", "r12");
@@ -107,7 +108,8 @@ static ssize_t l2_aux_ctl_store(struct s
 
 	asm ("mrc p15, 1, %0, c9, c0, 2" : "=r"(val));
 	SETBITS(val, 0xbc00000, new);
-	asm ("mov r0,  %0	\n\t"
+	asm (".arch_extension sec\n\t"
+	     "mov r0,  %0	\n\t"
 	     "mov r12, #2	\n\t"
 	     "smc #0		\n\t"
 	     :: "r"(val) : "r0", "r12");