sh64: Kill off unused trap_no/error_code from thread_struct.

While the trap number and error code are passed around for debugging
purposes, this occurs wholly independently of the thread struct values.
These values were never part of the sigcontext ABI and are thus never
passed anywhere, so we can just kill them off across the board.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/include/asm/processor_64.h

@@ -121,7 +121,6 @@ struct thread_struct {
 	   NULL for a kernel thread. */
 	struct pt_regs *uregs;
 
-	unsigned long trap_no, error_code;
 	unsigned long address;
 	/* Hardware debugging registers may come here */
 
@@ -138,8 +137,6 @@ struct thread_struct {
 	.pc		= 0,			\
         .kregs		= &fake_swapper_regs,	\
 	.uregs	        = NULL,			\
-	.trap_no	= 0,			\
-	.error_code	= 0,			\
 	.address	= 0,			\
 	.flags		= 0,			\
 }

arch/sh/kernel/cpu/sh5/fpu.c

@@ -107,8 +107,5 @@ asmlinkage void do_fpu_error(unsigned long ex, struct pt_regs *regs)
 
 	regs->pc += 4;
 
-	tsk->thread.trap_no = 11;
-	tsk->thread.error_code = 0;
-
 	force_sig(SIGFPE, tsk);
 }

arch/sh/kernel/traps_64.c

@@ -283,8 +283,6 @@ static void do_unhandled_exception(int trapnr, int signr, char *str, char *fn_na
 		unsigned long error_code, struct pt_regs *regs, struct task_struct *tsk)
 {
 	show_excp_regs(fn_name, trapnr, signr, regs);
-	tsk->thread.error_code = error_code;
-	tsk->thread.trap_no = trapnr;
 
 	if (user_mode(regs))
 		force_sig(signr, tsk);

arch/sh/mm/tlbflush_64.c

@@ -213,7 +213,6 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long writeaccess,
 			panic("INIT had user mode bad_area\n");
 		}
 		tsk->thread.address = address;
-		tsk->thread.error_code = writeaccess;
 		info.si_signo = SIGSEGV;
 		info.si_errno = 0;
 		info.si_addr = (void *) address;
@@ -263,8 +262,6 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long writeaccess,
 	 * or user mode.
 	 */
 	tsk->thread.address = address;
-	tsk->thread.error_code = writeaccess;
-	tsk->thread.trap_no = 14;
 	force_sig(SIGBUS, tsk);
 
 	/* Kernel mode? Handle exceptions or die */