Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 72a7aeac authored by Ram Chandrasekar's avatar Ram Chandrasekar Committed by Gerrit - the friendly Code Review server
Browse files

msm: lmh_lite: Return error on disabling a throttling sensor 



Return error when sensor polling is disabled when
it is still throttling. This case can occur due
to a race condition between the sensor value read
and sensor throttling value update.

Change-Id: I1e9a9fa97e0e4221752208cf139df05d6eedccbf
Signed-off-by: default avatarRam Chandrasekar <rkumbako@codeaurora.org>
parent d22f4f5f

drivers/thermal/lmh_lite.c

+5 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2014, The Linux Foundation. All rights reserved.

/* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -188,6 +188,10 @@ static int lmh_reset(struct lmh_sensor_ops *ops) 


	down_write(&lmh_sensor_access);

	if (lmh_data->intr_status_val & BIT(lmh_sensor->sensor_sw_id)) {

		if (lmh_sensor->last_read_value) {

			ret = -EAGAIN;

			goto reset_exit;

		}

		lmh_data->intr_status_val ^= BIT(lmh_sensor->sensor_sw_id);

		lmh_sensor->state = LMH_ISR_MONITOR;

		pr_debug("Sensor:[%s] not throttling. Switch to monitor mode\n",