linux-kernel - [PATCH v4 5/6] devfreq: rk3399_dmc: do not print error when get supply and clk defer.

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Message-Id: <20180509125749.31318-6-enric.balletbo@collabora.com>
Date:   Wed,  9 May 2018 14:57:47 +0200
From:   Enric Balletbo i Serra <enric.balletbo@...labora.com>
To:     myungjoo.ham@...sung.com, kyungmin.park@...sung.com,
        robh+dt@...nel.org
Cc:     devicetree@...r.kernel.org, ulf.hansson@...aro.org,
        heiko@...ech.de, linux-pm@...r.kernel.org, dbasehore@...omium.org,
        linux-kernel@...r.kernel.org, dianders@...gle.com,
        groeck@...omium.org, kernel@...labora.com, hl@...k-chips.com,
        Chanwoo Choi <cw00.choi@...sung.com>
Subject: [PATCH v4 5/6] devfreq: rk3399_dmc: do not print error when get supply and clk defer.

From: Lin Huang <hl@...k-chips.com>

We just return -EPROBE_DEFER error code to caller and do not
print error message when try to get center logic regulator
and DMC clock defer.

Signed-off-by: Lin Huang <hl@...k-chips.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
Reviewed-by: Chanwoo Choi <cw00.choi@...sung.com>
Acked-by: MyungJoo Ham <myungjoo.ham@...sung.com>
---

Changes in v4: None
Changes in v3: None
Changes in v2:
- [5/6] Add Acked-by MyungJoo Ham.
- [5/6] Add Reviewed-by Chanwoo Choi.

 drivers/devfreq/rk3399_dmc.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/devfreq/rk3399_dmc.c b/drivers/devfreq/rk3399_dmc.c
index 44a379657cd5..5bfca028eaaf 100644
--- a/drivers/devfreq/rk3399_dmc.c
+++ b/drivers/devfreq/rk3399_dmc.c
@@ -308,12 +308,18 @@ static int rk3399_dmcfreq_probe(struct platform_device *pdev)
 
 	data->vdd_center = devm_regulator_get(dev, "center");
 	if (IS_ERR(data->vdd_center)) {
+		if (PTR_ERR(data->vdd_center) == -EPROBE_DEFER)
+			return -EPROBE_DEFER;
+
 		dev_err(dev, "Cannot get the regulator \"center\"\n");
 		return PTR_ERR(data->vdd_center);
 	}
 
 	data->dmc_clk = devm_clk_get(dev, "dmc_clk");
 	if (IS_ERR(data->dmc_clk)) {
+		if (PTR_ERR(data->dmc_clk) == -EPROBE_DEFER)
+			return -EPROBE_DEFER;
+
 		dev_err(dev, "Cannot get the clk dmc_clk\n");
 		return PTR_ERR(data->dmc_clk);
 	};
-- 
2.17.0