linux-kernel - [PATCH] thermal: stm32: read factory settings properly

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 6 Dec 2018 09:12:56 +0000
From:   David HERNANDEZ SANCHEZ <david.hernandezsanchez@...com>
To:     Zhang Rui <rui.zhang@...el.com>,
        Eduardo Valentin <edubezval@...il.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre TORGUE <alexandre.torgue@...com>
CC:     "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-stm32@...md-mailman.stormreply.com" 
        <linux-stm32@...md-mailman.stormreply.com>
Subject: [PATCH] thermal: stm32: read factory settings properly

Call stm_thermal_read_factory_settings once
internal peripheral is properly clocked.

To avoid wrong initialization of fmt0
(stm_thermal_sensor struct) member add
brackets properly.

Change-Id: I150d00fd50e382df04bfad12f0653b1ed6a1db1b
Signed-off-by: David Hernandez Sanchez <david.hernandezsanchez@...com>

diff --git a/drivers/thermal/st/stm_thermal.c b/drivers/thermal/st/stm_thermal.c
index 47623da..bbd73c5 100644
--- a/drivers/thermal/st/stm_thermal.c
+++ b/drivers/thermal/st/stm_thermal.c
@@ -241,8 +241,8 @@ static int stm_thermal_read_factory_settings(struct stm_thermal_sensor *sensor)
 		sensor->t0 = TS1_T0_VAL1;
 
 	/* Retrieve fmt0 and put it on Hz */
-	sensor->fmt0 = ADJUST * readl_relaxed(sensor->base + DTS_T0VALR1_OFFSET)
-					      & TS1_FMT0_MASK;
+	sensor->fmt0 = ADJUST * (readl_relaxed(sensor->base +
+				 DTS_T0VALR1_OFFSET) & TS1_FMT0_MASK);
 
 	/* Retrieve ramp coefficient */
 	sensor->ramp_coeff = readl_relaxed(sensor->base + DTS_RAMPVALR_OFFSET) &
@@ -532,6 +532,10 @@ static int stm_thermal_prepare(struct stm_thermal_sensor *sensor)
 	if (ret)
 		return ret;
 
+	ret = stm_thermal_read_factory_settings(sensor);
+	if (ret)
+		goto thermal_unprepare;
+
 	ret = stm_thermal_calibration(sensor);
 	if (ret)
 		goto thermal_unprepare;
@@ -636,10 +640,6 @@ static int stm_thermal_probe(struct platform_device *pdev)
 	/* Populate sensor */
 	sensor->base = base;
 
-	ret = stm_thermal_read_factory_settings(sensor);
-	if (ret)
-		return ret;
-
 	sensor->clk = devm_clk_get(&pdev->dev, "pclk");
 	if (IS_ERR(sensor->clk)) {
 		dev_err(&pdev->dev, "%s: failed to fetch PCLK clock\n",
-- 
2.7.4