Merge tag 'sunxi-clocks-for-4.4' of https://git.kernel.org/pub/scm/linux/kernel/git...

[cascardo/linux.git] / arch / arm / kernel / signal.c

diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index b6cda06..7b8f214 100644 (file)
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -343,15 +343,18 @@ setup_return(struct pt_regs *regs, struct ksignal *ksig,
                 */
                thumb = handler & 1;
 
-#if __LINUX_ARM_ARCH__ >= 7
                /*
-                * Clear the If-Then Thumb-2 execution state
-                * ARM spec requires this to be all 000s in ARM mode
-                * Snapdragon S4/Krait misbehaves on a Thumb=>ARM
-                * signal transition without this.
+                * Clear the If-Then Thumb-2 execution state.  ARM spec
+                * requires this to be all 000s in ARM mode.  Snapdragon
+                * S4/Krait misbehaves on a Thumb=>ARM signal transition
+                * without this.
+                *
+                * We must do this whenever we are running on a Thumb-2
+                * capable CPU, which includes ARMv6T2.  However, we elect
+                * to always do this to simplify the code; this field is
+                * marked UNK/SBZP for older architectures.
                 */
                cpsr &= ~PSR_IT_MASK;
-#endif
 
                if (thumb) {
                        cpsr |= PSR_T_BIT;