sh: clkfwk: Safer resume from hibernation.
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>
diff --git a/arch/sh/kernel/cpu/clock.c b/arch/sh/kernel/cpu/clock.c
index 3209a87..1dc8964 100644
--- a/arch/sh/kernel/cpu/clock.c
+++ b/arch/sh/kernel/cpu/clock.c
@@ -372,12 +372,14 @@
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);
}