[ARM] 3100/1: simplify a pointer computation
Patch from Nicolas Pitre
Looks clearer this way.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index ba29827..07fb744 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -355,7 +355,7 @@
struct thread_info *thread = p->thread_info;
struct pt_regs *childregs;
- childregs = ((struct pt_regs *)((unsigned long)thread + THREAD_START_SP)) - 1;
+ childregs = (void *)thread + THREAD_START_SP - sizeof(*regs);
*childregs = *regs;
childregs->ARM_r0 = 0;
childregs->ARM_sp = stack_start;