[PATCH v4 2/2] thermal: rcar_gen3_thermal: disable interrupt in .remove

From: Jiada Wang <jiada_wang@mentor.com>
To: <rui.zhang@intel.com>, <edubezval@gmail.com>,
	<daniel.lezcano@linaro.org>
Cc: <linux-pm@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<jiada_wang@mentor.com>, <horms+renesas@verge.net.au>,
	<niklas.soderlund+renesas@ragnatech.se>,
	<geert+renesas@glider.be>, <sergei.shtylyov@cogentembedded.com>,
	<marek.vasut+renesas@gmail.com>,
	<kuninori.morimoto.gx@renesas.com>, <hien.dang.eb@renesas.com>,
	<fabrizio.castro@bp.renesas.com>, <dien.pham.ry@renesas.com>,
	<biju.das@bp.renesas.com>, <erosca@de.adit-jv.com>,
	<george_davis@mentor.com>, <joshua_frkuska@mentor.com>
Subject: [PATCH v4 2/2] thermal: rcar_gen3_thermal: disable interrupt in .remove
Date: Wed, 24 Apr 2019 14:11:45 +0900	[thread overview]
Message-ID: <20190424051145.23072-3-jiada_wang@mentor.com> (raw)
In-Reply-To: <20190424051145.23072-1-jiada_wang@mentor.com>

Currently IRQ remains enabled after .remove, later if device is probed,
IRQ is requested before .thermal_init, this may cause IRQ function be
called before device is initialized.

this patch disables interrupt in .remove, to ensure irq function
only be called after device is fully initialized.

Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
---
 drivers/thermal/rcar_gen3_thermal.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/thermal/rcar_gen3_thermal.c b/drivers/thermal/rcar_gen3_thermal.c
index 065e16f53285..280230951dfe 100644
--- a/drivers/thermal/rcar_gen3_thermal.c
+++ b/drivers/thermal/rcar_gen3_thermal.c
@@ -307,6 +307,9 @@ MODULE_DEVICE_TABLE(of, rcar_gen3_thermal_dt_ids);
 static int rcar_gen3_thermal_remove(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
+	struct rcar_gen3_thermal_priv *priv = dev_get_drvdata(dev);
+
+	rcar_thermal_irq_set(priv, false);
 
 	pm_runtime_put(dev);
 	pm_runtime_disable(dev);
-- 
2.19.2

