soc/tegra: pmc: Use existing pclk reference

The driver requests the pclk clock at probe time already and stores its
reference to it in struct tegra_pmc, so there is no need to look it up
everytime it is needed. Use the existing reference instead.

Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 7 insertions, 9 deletions

diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
index 0add31180096..bc34cf7482fb 100644
--- a/drivers/soc/tegra/pmc.c
+++ b/drivers/soc/tegra/pmc.c
@@ -459,7 +459,6 @@ static int tegra_io_rail_prepare(int id, unsigned long *request,
                                  unsigned long *status, unsigned int *bit)
 {
         unsigned long rate, value;
-        struct clk *clk;
 
         *bit = id % 32;
 
@@ -478,12 +477,7 @@ static int tegra_io_rail_prepare(int id, unsigned long *request,
                 *request = IO_DPD2_REQ;
         }
 
-        clk = clk_get_sys(NULL, "pclk");
-        if (IS_ERR(clk))
-                return PTR_ERR(clk);
-
-        rate = clk_get_rate(clk);
-        clk_put(clk);
+        rate = clk_get_rate(pmc->clk);
 
         tegra_pmc_writel(DPD_SAMPLE_ENABLE, DPD_SAMPLE);
 
@@ -537,8 +531,10 @@ int tegra_io_rail_power_on(int id)
         tegra_pmc_writel(value, request);
 
         err = tegra_io_rail_poll(status, mask, 0, 250);
-        if (err < 0)
+        if (err < 0) {
+                pr_info("tegra_io_rail_poll() failed: %d\n", err);
                 return err;
+        }
 
         tegra_io_rail_unprepare();
 
@@ -553,8 +549,10 @@ int tegra_io_rail_power_off(int id)
         int err;
 
         err = tegra_io_rail_prepare(id, &request, &status, &bit);
-        if (err < 0)
+        if (err < 0) {
+                pr_info("tegra_io_rail_prepare() failed: %d\n", err);
                 return err;
+        }
 
         mask = 1 << bit;