[PATCH 1/2] Input: edt-ft5x06 - use get_unaligned_be16()

Dmitry Torokhov
2019-06-23T06:32:06Z

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

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.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