opp_find_freq_ceil and opp_get_voltage are documented as requiring rcu_lock to be held. So hold it.
Signed-off-by: NeilBrown <[email protected]> diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c index 00bff46..470976e 100644 --- a/arch/arm/mach-omap2/pm.c +++ b/arch/arm/mach-omap2/pm.c @@ -174,14 +174,17 @@ static int __init omap2_set_init_voltage(char *vdd_name, char *clk_name, freq = clk->rate; clk_put(clk); + rcu_read_lock(); opp = opp_find_freq_ceil(dev, &freq); if (IS_ERR(opp)) { + rcu_read_unlock(); pr_err("%s: unable to find boot up OPP for vdd_%s\n", __func__, vdd_name); goto exit; } bootup_volt = opp_get_voltage(opp); + rcu_read_unlock(); if (!bootup_volt) { pr_err("%s: unable to find voltage corresponding " "to the bootup OPP for vdd_%s\n", __func__, vdd_name);
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