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| author | Francesco VIRLINZI <francesco.virlinzi@st.com> | 2009-03-13 08:08:01 +0000 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-03-16 20:11:00 +0900 |
| commit | 50cca715a64b66ccf173767d94d4020ea0a6129c (patch) | |
| tree | 56f26236a191e98825dca07e69835e42ee019d1d /arch/sh | |
| parent | e9edb3fec2260b5a64e9ca9e09160b74f1b106e3 (diff) | |
| download | linux-3.10-50cca715a64b66ccf173767d94d4020ea0a6129c.tar.gz linux-3.10-50cca715a64b66ccf173767d94d4020ea0a6129c.tar.bz2 linux-3.10-50cca715a64b66ccf173767d94d4020ea0a6129c.zip | |
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>
Diffstat (limited to 'arch/sh')
| -rw-r--r-- | arch/sh/kernel/cpu/clock.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/sh/kernel/cpu/clock.c b/arch/sh/kernel/cpu/clock.c index 3209a8740fa..1dc896483b5 100644 --- a/arch/sh/kernel/cpu/clock.c +++ b/arch/sh/kernel/cpu/clock.c @@ -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); } |