leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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

Browse Source 
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: a53ad8ef3d ("clk: ti: Convert to clk_hw based provider APIs")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This commit is contained in:
Tero Kristo 2016-02-20 13:12:57 +02:00 committed by Stephen Boyd
parent 4462b4bbfc
commit a0d54c3899
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/clk/ti/dpll3xxx.c
View File

@ -460,7 +460,8 @@ int omap3_noncore_dpll_enable(struct clk_hw *hw)
parent = clk_hw_get_parent(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)); WARN_ON(parent != __clk_get_hw(dd->clk_bypass));
r = _omap3_noncore_dpll_bypass(clk); r = _omap3_noncore_dpll_bypass(clk);
} else { } else {