linux-kernel - [PATCH 1/2] Input: edt-ft5x06

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Message-Id: <20190623063153.261546-1-dmitry.torokhov@gmail.com>
Date:   Sat, 22 Jun 2019 23:31:52 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     linux-input@...r.kernel.org
Cc:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Marco Felsch <m.felsch@...gutronix.de>,
        Benoit Parrot <bparrot@...com>, linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] Input: edt-ft5x06 - use get_unaligned_be16()

Instead of doing conversion by hand, let's use the proper accessors.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
 drivers/input/touchscreen/edt-ft5x06.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c
index c639ebce914c..ec770226e119 100644
--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -27,6 +27,7 @@
 #include <linux/gpio/consumer.h>
 #include <linux/input/mt.h>
 #include <linux/input/touchscreen.h>
+#include <asm/unaligned.h>
 
 #define WORK_REGISTER_THRESHOLD		0x00
 #define WORK_REGISTER_REPORT_RATE	0x08
@@ -239,8 +240,8 @@ static irqreturn_t edt_ft5x06_ts_isr(int irq, void *dev_id)
 		if (tsdata->version == EDT_M06 && type == TOUCH_EVENT_DOWN)
 			continue;
 
-		x = ((buf[0] << 8) | buf[1]) & 0x0fff;
-		y = ((buf[2] << 8) | buf[3]) & 0x0fff;
+		x = get_unaligned_be16(buf) & 0x0fff;
+		y = get_unaligned_be16(buf + 2) & 0x0fff;
 		/* The FT5x26 send the y coordinate first */
 		if (tsdata->version == EV_FT)
 			swap(x, y);
-- 
2.22.0.410.gd8fdbe21b5-goog