linux-kernel - [PATCH 2/2 v2] input: touchscreen: ar1021

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Date:   Sun, 30 Apr 2017 21:38:53 +0200
From:   Martin Kepplinger <martink@...teo.de>
To:     dmitry.torokhov@...il.com
Cc:     linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        Martin Kepplinger <martink@...teo.de>
Subject: [PATCH 2/2 v2] input: touchscreen: ar1021_i2c: use BIT to check for a bit

The MSB for the first byte of touch data transmission is always 1. Make
it a little more obvious we're testing this bit by using BIT(7).

Signed-off-by: Martin Kepplinger <martink@...teo.de>
---

I'd still use the definition :) but otherwise I'd write the following.
It really doesn't matter though.

thanks for the quick support Dmitry,

                    martin


 drivers/input/touchscreen/ar1021_i2c.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/touchscreen/ar1021_i2c.c b/drivers/input/touchscreen/ar1021_i2c.c
index eb1874fe52c2..8c76aa435903 100644
--- a/drivers/input/touchscreen/ar1021_i2c.c
+++ b/drivers/input/touchscreen/ar1021_i2c.c
@@ -44,7 +44,7 @@ static irqreturn_t ar1021_i2c_irq(int irq, void *dev_id)
 		goto out;
 
 	/* sync bit set ? */
-	if ((data[0] & 0x80) == 0)
+	if (!(data[0] & BIT(7)))
 		goto out;
 
 	button = data[0] & BIT(0);
-- 
2.11.0