[ARM PATCH] 1842/1: fix/clarify some comments

Patch from Nicolas Pitre

arch/arm/kernel/entry-armv.S

@@ -1219,7 +1219,7 @@ ENTRY(ret_from_exception)
 
 /*
  * Register switch for ARMv3 and ARMv4 processors
- * r0 = previous thread_info, r1 = next thread_info
+ * r0 = previous task_struct, r1 = previous thread_info, r2 = next thread_info
  * previous and next are guaranteed not to be the same.
  */
 ENTRY(__switch_to)

include/asm-arm/thread_info.h

@@ -40,7 +40,7 @@ struct cpu_context_save {
 
 /*
  * low level task data that entry.S needs immediate access to.
- * We assume cpu_context follows immedately after cpu_domain.
+ * __switch_to() assumes cpu_context follows immediately after cpu_domain.
  */
 struct thread_info {
 	unsigned long		flags;		/* low level flags */