linux-kernel - [PATCH 3/9] input: fix empty-body warning in synaptics.c

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Date:   Sat, 18 Apr 2020 11:41:05 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        linux-fsdevel@...r.kernel.org,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        linux-input@...r.kernel.org, Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org,
        "J. Bruce Fields" <bfields@...ldses.org>,
        Chuck Lever <chuck.lever@...cle.com>,
        linux-nfs@...r.kernel.org,
        Johannes Berg <johannes@...solutions.net>,
        Dan Williams <dan.j.williams@...el.com>,
        Vishal Verma <vishal.l.verma@...el.com>,
        Dave Jiang <dave.jiang@...el.com>, linux-nvdimm@...ts.01.org,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, target-devel@...r.kernel.org,
        Zzy Wysm <zzy@...wysm.com>
Subject: [PATCH 3/9] input: fix empty-body warning in synaptics.c

Fix gcc empty-body warning when -Wextra is used:

../drivers/input/mouse/synaptics.c: In function ‘synaptics_process_packet’:
../drivers/input/mouse/synaptics.c:1106:6: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]
      ;   /* Nothing, treat a pen as a single finger */
      ^

Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: linux-input@...r.kernel.org
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
---
 drivers/input/mouse/synaptics.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- linux-next-20200327.orig/drivers/input/mouse/synaptics.c
+++ linux-next-20200327/drivers/input/mouse/synaptics.c
@@ -20,6 +20,7 @@
  * Trademarks are the property of their respective owners.
  */
 
+#include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/delay.h>
 #include <linux/dmi.h>
@@ -1103,7 +1104,7 @@ static void synaptics_process_packet(str
 				break;
 			case 2:
 				if (SYN_MODEL_PEN(info->model_id))
-					;   /* Nothing, treat a pen as a single finger */
+					do_empty(); /* Nothing, treat a pen as a single finger */
 				break;
 			case 4 ... 15:
 				if (SYN_CAP_PALMDETECT(info->capabilities))