[PATCH 1/2] HID: wacom: Write shared touch initial status only once

[PATCH 1/2] HID: wacom: Write shared touch initial status only once

[Ping Cheng]

From: Ping Cheng <ping.cheng@wacom.com>

For consistency with how the shared has_mute_touch_switch is handled during
registration, let's apply WRITE_ONCE to is_touch_on too.

Cc: stable@vger.kernel.org
Fixes: ba16e5ffbaa1 ("HID: wacom: Advertise SW_MUTE_DEVICE capability prior to registration")
Reviewed-by: Lee Jones <lee@kernel.org>
Signed-off-by: Ping Cheng <ping.cheng@wacom.com>
---
 drivers/hid/wacom_sys.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index 8dc7aa1c0a26..33fa491fba92 100644
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -2386,7 +2386,7 @@ static void wacom_set_shared_values(struct wacom_wac *wacom_wac)
 		 * match historic default.
 		 */
 		if (wacom_wac->is_soft_touch_switch)
-			wacom_wac->shared->is_touch_on = true;
+			WRITE_ONCE(wacom_wac->shared->is_touch_on, true);
 	}
 
 	if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH) {
-- 
2.55.0