ARM: tegra: cpufreq: move clk_get/put out of function tegra_cpu_init/exit

tegra_cpu_init/exit will be called every time one cpu core is online or
offline. And all cpu cores share same clocks, redundant clk_get/put
wast time,  so I move them out.

Signed-off-by: Richard Zhao <linuxzsc@gmail.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

1 files changed, 20 insertions, 20 deletions

diff --git a/arch/arm/mach-tegra/cpu-tegra.c b/arch/arm/mach-tegra/cpu-tegra.c
index a74d3c7d2e26..85d4a23bba03 100644
--- a/arch/arm/mach-tegra/cpu-tegra.c
+++ b/arch/arm/mach-tegra/cpu-tegra.c
@@ -214,24 +214,6 @@ static int tegra_cpu_init(struct cpufreq_policy *policy)
         if (policy->cpu >= NUM_CPUS)
                 return -EINVAL;
 
-        cpu_clk = clk_get_sys(NULL, "cpu");
-        if (IS_ERR(cpu_clk))
-                return PTR_ERR(cpu_clk);
-
-        pll_x_clk = clk_get_sys(NULL, "pll_x");
-        if (IS_ERR(pll_x_clk))
-                return PTR_ERR(pll_x_clk);
-
-        pll_p_clk = clk_get_sys(NULL, "pll_p");
-        if (IS_ERR(pll_p_clk))
-                return PTR_ERR(pll_p_clk);
-
-        emc_clk = clk_get_sys("cpu", "emc");
-        if (IS_ERR(emc_clk)) {
-                clk_put(cpu_clk);
-                return PTR_ERR(emc_clk);
-        }
-
         clk_prepare_enable(emc_clk);
         clk_prepare_enable(cpu_clk);
 
@@ -256,8 +238,6 @@ static int tegra_cpu_exit(struct cpufreq_policy *policy)
 {
         cpufreq_frequency_table_cpuinfo(policy, freq_table);
         clk_disable_unprepare(emc_clk);
-        clk_put(emc_clk);
-        clk_put(cpu_clk);
         return 0;
 }
 
@@ -278,12 +258,32 @@ static struct cpufreq_driver tegra_cpufreq_driver = {
 
 static int __init tegra_cpufreq_init(void)
 {
+        cpu_clk = clk_get_sys(NULL, "cpu");
+        if (IS_ERR(cpu_clk))
+                return PTR_ERR(cpu_clk);
+
+        pll_x_clk = clk_get_sys(NULL, "pll_x");
+        if (IS_ERR(pll_x_clk))
+                return PTR_ERR(pll_x_clk);
+
+        pll_p_clk = clk_get_sys(NULL, "pll_p");
+        if (IS_ERR(pll_p_clk))
+                return PTR_ERR(pll_p_clk);
+
+        emc_clk = clk_get_sys("cpu", "emc");
+        if (IS_ERR(emc_clk)) {
+                clk_put(cpu_clk);
+                return PTR_ERR(emc_clk);
+        }
+
         return cpufreq_register_driver(&tegra_cpufreq_driver);
 }
 
 static void __exit tegra_cpufreq_exit(void)
 {
         cpufreq_unregister_driver(&tegra_cpufreq_driver);
+        clk_put(emc_clk);
+        clk_put(cpu_clk);
 }