linux-kernel - [PATCH v2 3/7] thermal/core: Export thermal_cooling_device_stats

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Message-Id: <20210523235620.31538-4-digetx@gmail.com>
Date:   Mon, 24 May 2021 02:56:16 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Zhang Rui <rui.zhang@...el.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amitk@...nel.org>,
        Andreas Westman Dorcsak <hedmoo@...oo.com>,
        Maxim Schwalm <maxim.schwalm@...il.com>,
        Svyatoslav Ryhel <clamor95@...il.com>,
        Ihor Didenko <tailormoon@...bler.ru>,
        Ion Agorria <ion@...rria.com>,
        Matt Merhar <mattmerhar@...tonmail.com>,
        Peter Geis <pgwipeout@...il.com>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-tegra@...r.kernel.org
Subject: [PATCH v2 3/7] thermal/core: Export thermal_cooling_device_stats_update()

NVIDIA Tegra30 thermal sensor driver has a hardware-controlled CPU cooling
feature that halves CPU frequency once a specified trip point is breached.
In order to account the hardware state transitions, which are reported by
interrupt, the sensor driver needs to report the cooling state transition
and this is done by thermal_cooling_device_stats_update(). The sensor
driver could be compiled as a loadable driver module, but this API
function isn't exported, hence export it.

Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
 drivers/thermal/thermal_sysfs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/thermal/thermal_sysfs.c b/drivers/thermal/thermal_sysfs.c
index 1c4aac8464a7..ab373280f853 100644
--- a/drivers/thermal/thermal_sysfs.c
+++ b/drivers/thermal/thermal_sysfs.c
@@ -690,6 +690,7 @@ void thermal_cooling_device_stats_update(struct thermal_cooling_device *cdev,
 unlock:
 	spin_unlock(&stats->lock);
 }
+EXPORT_SYMBOL_GPL(thermal_cooling_device_stats_update);
 
 static ssize_t total_trans_show(struct device *dev,
 				struct device_attribute *attr, char *buf)
-- 
2.30.2