linux-kernel - [PATCH] clk: tegra: Do not return 0 on failure

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Message-Id: <20201029004820.9062-1-nicoleotsuka@gmail.com>
Date:   Wed, 28 Oct 2020 17:48:20 -0700
From:   Nicolin Chen <nicoleotsuka@...il.com>
To:     jonathanh@...dia.com, thierry.reding@...il.com, sboyd@...nel.org,
        mturquette@...libre.com, pgaikwad@...dia.com,
        pdeschrijver@...dia.com
Cc:     stable@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-clk@...r.kernel.org
Subject: [PATCH] clk: tegra: Do not return 0 on failure

Return values from read_dt_param() will be either TRUE (1) or
FALSE (0), while dfll_fetch_pwm_params() returns 0 on success
or an ERR code on failure.

So this patch fixes the bug of returning 0 on failure.

Fixes: 36541f0499fe ("clk: tegra: dfll: support PWM regulator control")
Cc: <stable@...r.kernel.org>
Signed-off-by: Nicolin Chen <nicoleotsuka@...il.com>
---
 drivers/clk/tegra/clk-dfll.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/tegra/clk-dfll.c b/drivers/clk/tegra/clk-dfll.c
index cfbaa90c7adb..a5f526bb0483 100644
--- a/drivers/clk/tegra/clk-dfll.c
+++ b/drivers/clk/tegra/clk-dfll.c
@@ -1856,13 +1856,13 @@ static int dfll_fetch_pwm_params(struct tegra_dfll *td)
 			    &td->reg_init_uV);
 	if (!ret) {
 		dev_err(td->dev, "couldn't get initialized voltage\n");
-		return ret;
+		return -EINVAL;
 	}
 
 	ret = read_dt_param(td, "nvidia,pwm-period-nanoseconds", &pwm_period);
 	if (!ret) {
 		dev_err(td->dev, "couldn't get PWM period\n");
-		return ret;
+		return -EINVAL;
 	}
 	td->pwm_rate = (NSEC_PER_SEC / pwm_period) * (MAX_DFLL_VOLTAGES - 1);
 
-- 
2.17.1