tracing: Annotate implicit fall through in parse_probe_arg()

There is a plan to build the kernel with -Wimplicit-fallthrough and
this place in the code produced a warning (W=1).

This commit remove the following warning:

  kernel/trace/trace_probe.c:302:6: warning: this statement may fall through [-Wimplicit-fallthrough=]

Link: http://lkml.kernel.org/r/20190114203039.16535-1-malat@debian.org
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

diff --git a/kernel/trace/trace_probe.c b/kernel/trace/trace_probe.c
index 9962cb5da8acdebb43e247c1e55df86a19038a51..89da34b326e3cf05b048f60011a08bc88d42b81f 100644 (file)
--- a/kernel/trace/trace_probe.c
+++ b/kernel/trace/trace_probe.c
@@ -300,6 +300,7 @@ parse_probe_arg(char *arg, const struct fetch_type *type,
 
        case '+':       /* deref memory */
                arg++;  /* Skip '+', because kstrtol() rejects it. */
+               /* fall through */
        case '-':
                tmp = strchr(arg, '(');
                if (!tmp)