linux-kernel - [PATCH] CHROMIUM: devfreq: rk3399: Clear edev->dev drvdata before enabling dfi

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Message-Id: <20170901235237.18390-1-jeffy.chen@rock-chips.com>
Date:   Sat,  2 Sep 2017 07:52:37 +0800
From:   Jeffy Chen <jeffy.chen@...k-chips.com>
To:     linux-kernel@...r.kernel.org, dbasehore@...omium.org
Cc:     briannorris@...omium.org, dianders@...omium.org,
        Jeffy Chen <jeffy.chen@...k-chips.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        linux-pm@...r.kernel.org
Subject: [PATCH] CHROMIUM: devfreq: rk3399: Clear edev->dev drvdata before enabling dfi

Currently we are using edev->dev drvdata to get rk3399-dmc data, but
it would be inited to edev in devfreq_event_add_edev.

So we need to clear the edev->dev drvdata before enabling dfi, to
prevent dfi from getting the wrong rk3399-dmc data when the irq
triggered too early.

Signed-off-by: Jeffy Chen <jeffy.chen@...k-chips.com>
---

 drivers/devfreq/rk3399_dmc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/devfreq/rk3399_dmc.c b/drivers/devfreq/rk3399_dmc.c
index 1b89ebbad02c..12f9f03f349f 100644
--- a/drivers/devfreq/rk3399_dmc.c
+++ b/drivers/devfreq/rk3399_dmc.c
@@ -429,6 +429,7 @@ static int rk3399_dmcfreq_probe(struct platform_device *pdev)
 
 	rk3399_devfreq_dmc_profile.initial_freq = data->rate;
 
+	platform_set_drvdata(pdev, NULL);
 	data->devfreq = devm_devfreq_add_device(dev,
 					   &rk3399_devfreq_dmc_profile,
 					   "simple_ondemand",
-- 
2.11.0