[PATCH 4.18 065/123] lib/vsprintf: Do not handle %pO[^F] as %px

[Greg Kroah-Hartman]

4.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Bart Van Assche <bart.vanass...@wdc.com>

commit 554ec508653688c21d9b8024af73a1ffaa0164b9 upstream.

This patch avoids that gcc reports the following when building with W=1:

lib/vsprintf.c:1941:3: warning: this statement may fall through 
[-Wimplicit-fallthrough=]
   switch (fmt[1]) {
   ^~~~~~

Fixes: 7b1924a1d930eb2 ("vsprintf: add printk specifier %px")
Link: http://lkml.kernel.org/r/20180806223421.11995-1-bart.vanass...@wdc.com
Cc: linux-kernel@vger.kernel.org
Cc: Bart Van Assche <bart.vanass...@wdc.com>
Cc: Pantelis Antoniou <pantelis.anton...@konsulko.com>
Cc: Joe Perches <j...@perches.com>
Cc: Rob Herring <r...@kernel.org>
Cc: v4.15+ <sta...@vger.kernel.org>
Signed-off-by: Bart Van Assche <bart.vanass...@wdc.com>
Signed-off-by: Petr Mladek <pmla...@suse.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 lib/vsprintf.c |    1 +
 1 file changed, 1 insertion(+)

--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1942,6 +1942,7 @@ char *pointer(const char *fmt, char *buf
                case 'F':
                        return device_node_string(buf, end, ptr, spec, fmt + 1);
                }
+               break;
        case 'x':
                return pointer_string(buf, end, ptr, spec);
        }