clk: ti: omap3+: dpll: use non-locking version of clk_get_rate

As the code in this file is being executed within irq context in some
cases, we must avoid the clk_get_rate which uses mutex internally.
Switch the code to use clk_hw_get_rate instead which is non-locking.

This fixes an issue where PM runtime will hang the system if enabled
with a serial console before a suspend-resume cycle.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Fixes: a53ad8ef3dcc ("clk: ti: Convert to clk_hw based provider APIs")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

diff --git a/drivers/clk/ti/dpll3xxx.c b/drivers/clk/ti/dpll3xxx.c
index 1c300388782ba19d1377bdbbbf9ab05a8939791d..cc739291a3ce47466e87023c2bdfd56951e7bf2f 100644 (file)
--- a/drivers/clk/ti/dpll3xxx.c
+++ b/drivers/clk/ti/dpll3xxx.c
@@ -460,7 +460,8 @@ int omap3_noncore_dpll_enable(struct clk_hw *hw)
 
        parent = clk_hw_get_parent(hw);
 
-       if (clk_hw_get_rate(hw) == clk_get_rate(dd->clk_bypass)) {
+       if (clk_hw_get_rate(hw) ==
+           clk_hw_get_rate(__clk_get_hw(dd->clk_bypass))) {
                WARN_ON(parent != __clk_get_hw(dd->clk_bypass));
                r = _omap3_noncore_dpll_bypass(clk);
        } else {