On Thu, Jun 16, 2011 at 15:47, Kevin Hilman <khil...@ti.com> wrote:
> Nishanth Menon <n...@ti.com> writes:
>
>> OPP functions as described in Documentation/power/opp.txt
>> should be accessed under rcu_locks.
>>
>> Signed-off-by: Nishanth Menon <n...@ti.com>
>
> This looks like a fix needed in mainline.
>
> Please send as a standalone patch against mainline and Cc
> linux-arm-kernel.
ok will do.
Regards,
Nishanth Menon
>
> Thanks,
>
> Kevin
>
>> ---
>> arch/arm/mach-omap2/pm.c | 3 +++
>> 1 files changed, 3 insertions(+), 0 deletions(-)
>>
>> diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
>> index d085f29..7355347 100644
>> --- a/arch/arm/mach-omap2/pm.c
>> +++ b/arch/arm/mach-omap2/pm.c
>> @@ -198,14 +198,17 @@ 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();
>> printk(KERN_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) {
>> printk(KERN_ERR "%s: unable to find voltage corresponding"
>> "to the bootup OPP for vdd_%s\n", __func__, vdd_name);
>
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