[PATCH] arch/sparc/kernel/ptrace: pointless assignment and shadowed var

A few tiny cleanups for arch/sparc/kernel/ptrace.c::do_ptrace post the big
verify_area/access_ok cleanup.

'ret' shadows a variable of the same name in the enclosing scope, rename it.

The assignment of -EFAULT to 'i' exactely mirrors what the old verify_area
code did, but that was only to use 'i' to check the return value of
verify_area.  Now that we check access_ok directly and 'i' is initialized in
the for loop a few lines below anyway, the asignment of -EFAULT to i is bogus,
just pass pass EFAULT directly as the second arg to pt_error_return. 

Also a few tiny whitespace cleanups - 'if ()' vs 'if()'.
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/sparc/kernel/ptrace.c

@@ -285,17 +285,17 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
 			       s, (int) request, (int) pid, addr, data, addr2);
 	}
 #endif
-	if(request == PTRACE_TRACEME) {
-		int ret;
+	if (request == PTRACE_TRACEME) {
+		int my_ret;
 
 		/* are we already being traced? */
 		if (current->ptrace & PT_PTRACED) {
 			pt_error_return(regs, EPERM);
 			goto out;
 		}
-		ret = security_ptrace(current->parent, current);
-		if (ret) {
-			pt_error_return(regs, -ret);
+		my_ret = security_ptrace(current->parent, current);
+		if (my_ret) {
+			pt_error_return(regs, -my_ret);
 			goto out;
 		}
 
@@ -305,7 +305,7 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
 		goto out;
 	}
 #ifndef ALLOW_INIT_TRACING
-	if(pid == 1) {
+	if (pid == 1) {
 		/* Can't dork with init. */
 		pt_error_return(regs, EPERM);
 		goto out;
@@ -402,8 +402,7 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
 		 * bits in the psr.
 		 */
 		if (!access_ok(VERIFY_READ, pregs, sizeof(struct pt_regs))) {
-			i = -EFAULT;
-			pt_error_return(regs, -i);
+			pt_error_return(regs, EFAULT);
 			goto out_tsk;
 		}
 		__get_user(psr, (&pregs->psr));
@@ -413,7 +412,7 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
 		psr &= PSR_ICC;
 		cregs->psr &= ~PSR_ICC;
 		cregs->psr |= psr;
-		if(!((pc | npc) & 3)) {
+		if (!((pc | npc) & 3)) {
 			cregs->pc = pc;
 			cregs->npc =npc;
 		}