[PATCH 5/7] Input: cy8ctmg110_ts - use endian helpers when converting data on wire
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: 2021-06-03 04:37:56
Also in:
lkml
Subsystem:
input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers:
Dmitry Torokhov, Linus Torvalds
Switch to using be16_to_cpup() instead of shifting and combining data by hand. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> --- drivers/input/touchscreen/cy8ctmg110_ts.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/input/touchscreen/cy8ctmg110_ts.c b/drivers/input/touchscreen/cy8ctmg110_ts.c
index f8d7ab3b6c25..33c1360a251c 100644
--- a/drivers/input/touchscreen/cy8ctmg110_ts.c
+++ b/drivers/input/touchscreen/cy8ctmg110_ts.c@@ -16,6 +16,7 @@ #include <linux/i2c.h> #include <linux/gpio.h> #include <linux/input/cy8ctmg110_pdata.h> +#include <asm/byteorder.h> #define CY8CTMG110_DRIVER_NAME "cy8ctmg110"
@@ -111,7 +112,6 @@ static int cy8ctmg110_touch_pos(struct cy8ctmg110 *tsc) { struct input_dev *input = tsc->input; unsigned char reg_p[CY8CTMG110_REG_MAX]; - int x, y; memset(reg_p, 0, CY8CTMG110_REG_MAX);
@@ -119,16 +119,15 @@ static int cy8ctmg110_touch_pos(struct cy8ctmg110 *tsc) if (cy8ctmg110_read_regs(tsc, reg_p, 9, CY8CTMG110_TOUCH_X1) != 0) return -EIO; - y = reg_p[2] << 8 | reg_p[3]; - x = reg_p[0] << 8 | reg_p[1]; - /* Number of touch */ if (reg_p[8] == 0) { input_report_key(input, BTN_TOUCH, 0); } else { input_report_key(input, BTN_TOUCH, 1); - input_report_abs(input, ABS_X, x); - input_report_abs(input, ABS_Y, y); + input_report_abs(input, ABS_X, + be16_to_cpup((__be16 *)(reg_p + 0))); + input_report_abs(input, ABS_Y, + be16_to_cpup((__be16 *)(reg_p + 2))); } input_sync(input);
--
2.32.0.rc0.204.g9fa02ecfa5-goog