drivers/xen/xenbus: Replace deprecated strcpy in xenbus_transaction_end

strcpy() is deprecated; inline the read-only string instead. Fix the
function comment and use bool instead of int while we're at it.

Link: https://github.com/KSPP/linux/issues/88
Reviewed-by: Juergen Gross <[e-mail]>
Signed-off-by: Thorsten Blum <[e-mail]>
Signed-off-by: Juergen Gross <[e-mail]>
Message-ID: <[e-mail]>

drivers/xen/xenbus/xenbus_xs.c

···
 EXPORT_SYMBOL_GPL(xenbus_transaction_start);
 
 /* End a transaction.
- * If abandon is true, transaction is discarded instead of committed.
+ * If abort is true, transaction is discarded instead of committed.
  */
-int xenbus_transaction_end(struct xenbus_transaction t, int abort)
+int xenbus_transaction_end(struct xenbus_transaction t, bool abort)
 {
-	char abortstr[2];
-
-	if (abort)
-		strcpy(abortstr, "F");
-	else
-		strcpy(abortstr, "T");
-
-	return xs_error(xs_single(t, XS_TRANSACTION_END, abortstr, NULL));
+	return xs_error(xs_single(t, XS_TRANSACTION_END, abort ? "F" : "T",
+				  NULL));
 }
 EXPORT_SYMBOL_GPL(xenbus_transaction_end);
 

include/xen/xenbus.h

···
 		  const char *dir, const char *node);
 int xenbus_rm(struct xenbus_transaction t, const char *dir, const char *node);
 int xenbus_transaction_start(struct xenbus_transaction *t);
-int xenbus_transaction_end(struct xenbus_transaction t, int abort);
+int xenbus_transaction_end(struct xenbus_transaction t, bool abort);
 
 /* Single read and scanf: returns -errno or num scanned if > 0. */
 __scanf(4, 5)