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[v2,09/11] cpufreq: tegra20: Check if this is Tegra20 machine

Message ID 20180518200642.24815-10-digetx@gmail.com (mailing list archive)
State Mainlined
Delegated to: Rafael Wysocki
Headers show

Commit Message

Dmitry Osipenko May 18, 2018, 8:06 p.m. UTC
Don't even try to request the clocks during of module initialization on
non-Tegra20 machines (this is the case for a multi-platform kernel) for

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Thierry Reding <treding@nvidia.com>
 drivers/cpufreq/tegra20-cpufreq.c | 4 ++++
 1 file changed, 4 insertions(+)
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diff --git a/drivers/cpufreq/tegra20-cpufreq.c b/drivers/cpufreq/tegra20-cpufreq.c
index 36075aee2ff2..7b425ebe81e7 100644
--- a/drivers/cpufreq/tegra20-cpufreq.c
+++ b/drivers/cpufreq/tegra20-cpufreq.c
@@ -21,6 +21,7 @@ 
 #include <linux/err.h>
 #include <linux/init.h>
 #include <linux/module.h>
+#include <linux/of.h>
 #include <linux/types.h>
 static struct cpufreq_frequency_table freq_table[] = {
@@ -158,6 +159,9 @@  static int __init tegra_cpufreq_init(void)
 	int err;
+	if (!of_machine_is_compatible("nvidia,tegra20"))
+		return -ENODEV;
 	cpu_clk = clk_get_sys(NULL, "cclk");
 	if (IS_ERR(cpu_clk))
 		return PTR_ERR(cpu_clk);