From 100890c55e326a9acb4429593c5ad2012c194564 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 13 May 2009 17:05:51 +0900 Subject: sh: clkfwk: Provide a generic clk_set_rate_ex() path for root clocks. In the case of root clocks (such as clkin oscillators, extal, etc.), the rate information is entirely platform dependent and needs to be lazily set and propagated from the platform code. This provides a method for establishing the rate update on these types of clocks that define no set_rate() op of their own. Signed-off-by: Paul Mundt --- arch/sh/kernel/cpu/clock.c | 25 ++++++++++++++++--------- 1 file changed, 16 insertions(+), 9 deletions(-) diff --git a/arch/sh/kernel/cpu/clock.c b/arch/sh/kernel/cpu/clock.c index 2ced20f870d1..0a7755cc8a25 100644 --- a/arch/sh/kernel/cpu/clock.c +++ b/arch/sh/kernel/cpu/clock.c @@ -265,20 +265,27 @@ EXPORT_SYMBOL_GPL(clk_set_rate); int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id) { int ret = -EOPNOTSUPP; + unsigned long flags; - if (likely(clk->ops && clk->ops->set_rate)) { - unsigned long flags; + spin_lock_irqsave(&clock_lock, flags); - spin_lock_irqsave(&clock_lock, flags); + if (likely(clk->ops && clk->ops->set_rate)) { ret = clk->ops->set_rate(clk, rate, algo_id); - if (ret == 0) { - if (clk->ops->recalc) - clk->rate = clk->ops->recalc(clk); - propagate_rate(clk); - } - spin_unlock_irqrestore(&clock_lock, flags); + if (ret != 0) + goto out_unlock; + } else { + clk->rate = rate; + ret = 0; } + if (clk->ops && clk->ops->recalc) + clk->rate = clk->ops->recalc(clk); + + propagate_rate(clk); + +out_unlock: + spin_unlock_irqrestore(&clock_lock, flags); + return ret; } EXPORT_SYMBOL_GPL(clk_set_rate_ex); -- cgit v1.2.1