From: Tero Kristo t-kristo@ti.com
commit a0d54c3899aaeb047969d9479263c6bcf385c331 upstream.
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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/clk/ti/dpll3xxx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/clk/ti/dpll3xxx.c +++ b/drivers/clk/ti/dpll3xxx.c @@ -437,7 +437,8 @@ int omap3_noncore_dpll_enable(struct clk
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 {