linux-kernel - [PATCH 2/5] input: touchscreen: melfas_mip4: Mark a bunch of variables as __always

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Date:   Thu, 14 Jan 2021 15:23:20 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     lee.jones@...aro.org
Cc:     linux-kernel@...r.kernel.org, Sangwon Jee <jeesw@...fas.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Henrik Rydberg <rydberg@...math.org>,
        linux-input@...r.kernel.org
Subject: [PATCH 2/5] input: touchscreen: melfas_mip4: Mark a bunch of variables as __always_unused

Dmitry requested to keep these around for the purposes of documentation.

Fixes the following W=1 kernel build warning(s):

 drivers/input/touchscreen/melfas_mip4.c: In function ‘mip4_report_touch’:
 drivers/input/touchscreen/melfas_mip4.c:474:5: warning: variable ‘size’ set but not used [-Wunused-but-set-variable]
 drivers/input/touchscreen/melfas_mip4.c:472:5: warning: variable ‘pressure_stage’ set but not used [-Wunused-but-set-variable]
 drivers/input/touchscreen/melfas_mip4.c:469:7: warning: variable ‘palm’ set but not used [-Wunused-but-set-variable]
 drivers/input/touchscreen/melfas_mip4.c:468:7: warning: variable ‘hover’ set but not used [-Wunused-but-set-variable]

Cc: Sangwon Jee <jeesw@...fas.com>
Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: Henrik Rydberg <rydberg@...math.org>
Cc: linux-input@...r.kernel.org
Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
 drivers/input/touchscreen/melfas_mip4.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/input/touchscreen/melfas_mip4.c b/drivers/input/touchscreen/melfas_mip4.c
index c0050044a5a9e..225796a3f5460 100644
--- a/drivers/input/touchscreen/melfas_mip4.c
+++ b/drivers/input/touchscreen/melfas_mip4.c
@@ -465,13 +465,13 @@ static void mip4_report_keys(struct mip4_ts *ts, u8 *packet)
 static void mip4_report_touch(struct mip4_ts *ts, u8 *packet)
 {
 	int id;
-	bool hover;
-	bool palm;
+	bool __always_unused hover;
+	bool __always_unused palm;
 	bool state;
 	u16 x, y;
-	u8 pressure_stage = 0;
+	u8 __always_unused pressure_stage = 0;
 	u8 pressure;
-	u8 size;
+	u8 __always_unused size;
 	u8 touch_major;
 	u8 touch_minor;
 
-- 
2.25.1