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cpufreq: imx6q: add return value check for voltage scale 

[ Upstream commit 6ef28a04d1 ]

Add return value check for voltage scale when ARM clock
rate change fail.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Anson Huang 2018-11-05 00:59:28 +00:00 committed by Greg Kroah-Hartman
parent 8bb923f515
commit 6d39dd9c0d
1 changed files with 6 additions and 1 deletions
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7
drivers/cpufreq/imx6q-cpufreq.c
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@ -130,8 +130,13 @@ static int imx6q_set_target(struct cpufreq_policy *policy, unsigned int index)
/* Ensure the arm clock divider is what we expect */
ret = clk_set_rate(arm_clk, new_freq * 1000);
if (ret) {
int ret1;
dev_err(cpu_dev, "failed to set clock rate: %d\n", ret);
regulator_set_voltage_tol(arm_reg, volt_old, 0);
ret1 = regulator_set_voltage_tol(arm_reg, volt_old, 0);
if (ret1)
dev_warn(cpu_dev,
"failed to restore vddarm voltage: %d\n", ret1);
return ret;
}