ARM: use get_cr() rather than cr_alignment

Rather than reading the cr_alignment variable, use get_cr() to read
directly from the hardware instead. We have two places where this
occurs, neither of them are performance critical.

Signed-off-by: Russell King <[e-mail]>

arch/arm/include/asm/cp15.h

···
 #ifndef __ASSEMBLY__
 
 #if __LINUX_ARM_ARCH__ >= 4
-#define vectors_high()	(cr_alignment & CR_V)
+#define vectors_high()	(get_cr() & CR_V)
 #else
 #define vectors_high()	(0)
 #endif
···
  */
 #define cr_no_alignment	UL(0)
 #define cr_alignment	UL(0)
+
+static inline unsigned long get_cr(void)
+{
+	return 0;
+}
 
 #endif /* ifdef CONFIG_CPU_CP15 / else */
 

arch/arm/kernel/setup.c

···
 
 	pr_info("CPU: %s [%08x] revision %d (ARMv%s), cr=%08lx\n",
 		cpu_name, read_cpuid_id(), read_cpuid_id() & 15,
-		proc_arch[cpu_architecture()], cr_alignment);
+		proc_arch[cpu_architecture()], get_cr());
 
 	snprintf(init_utsname()->machine, __NEW_UTS_LEN + 1, "%s%c",
 		 list->arch_name, ENDIANNESS);

arch/arm/mm/alignment.c

···
 /* Return true if and only if the ARMv6 unaligned access model is in use. */
 static bool cpu_is_v6_unaligned(void)
 {
-	return cpu_architecture() >= CPU_ARCH_ARMv6 && (cr_alignment & CR_U);
+	return cpu_architecture() >= CPU_ARCH_ARMv6 && get_cr() & CR_U;
 }
 
 static int safe_usermode(int new_usermode, bool warn)