cpufreq: qcom-hw: Use optional irq API

Use platform_get_irq_optional() to avoid a noisy error message when the
irq isn't specified. The irq is definitely optional given that we only
care about errors that are -EPROBE_DEFER here.

Cc: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c
index 5b0acf5..05f3d78 100644 (file)
--- a/drivers/cpufreq/qcom-cpufreq-hw.c
+++ b/drivers/cpufreq/qcom-cpufreq-hw.c
@@ -374,9 +374,11 @@ static int qcom_cpufreq_hw_lmh_init(struct cpufreq_policy *policy, int index)
         * Look for LMh interrupt. If no interrupt line is specified /
         * if there is an error, allow cpufreq to be enabled as usual.
         */
-       data->throttle_irq = platform_get_irq(pdev, index);
-       if (data->throttle_irq <= 0)
-               return data->throttle_irq == -EPROBE_DEFER ? -EPROBE_DEFER : 0;
+       data->throttle_irq = platform_get_irq_optional(pdev, index);
+       if (data->throttle_irq == -ENXIO)
+               return 0;
+       if (data->throttle_irq < 0)
+               return data->throttle_irq;
 
        data->cancel_throttle = false;
        data->policy = policy;