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sh: clkfwk: Safer resume from hibernation.

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This patch fixes a possible problem in the resume from
hibenration. It temporaneally saves the clk->rate on the
stack to avoid any possible change during the clk->set_parent(..)
call.

Signed-off-by: Francesco Virlinzi <francesco.virlinzi@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Francesco VIRLINZI 2009-03-13 08:08:01 +00:00 committed by Paul Mundt
parent e9edb3fec2
commit 50cca715a6
1 changed files with 3 additions and 1 deletions
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4
arch/sh/kernel/cpu/clock.c
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@ -372,12 +372,14 @@ static int clks_sysdev_suspend(struct sys_device *dev, pm_message_t state)
if (prev_state.event == PM_EVENT_FREEZE) {
list_for_each_entry(clkp, &clock_list, node)
if (likely(clkp->ops)) {
unsigned long rate = clkp->rate;
if (likely(clkp->ops->set_parent))
clkp->ops->set_parent(clkp,
clkp->parent);
if (likely(clkp->ops->set_rate))
clkp->ops->set_rate(clkp,
clkp->rate, NO_CHANGE);
rate, NO_CHANGE);
else if (likely(clkp->ops->recalc))
clkp->ops->recalc(clkp);
}