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cpufreq: powernv: Fix frame-size-overflow in powernv_cpufreq_reboot_notifier 

[ Upstream commit a2d0230b91 ]

The patch avoids allocating cpufreq_policy on stack hence fixing frame
size overflow in 'powernv_cpufreq_reboot_notifier':

  drivers/cpufreq/powernv-cpufreq.c: In function powernv_cpufreq_reboot_notifier:
  drivers/cpufreq/powernv-cpufreq.c:906:1: error: the frame size of 2064 bytes is larger than 2048 bytes

Fixes: cf30af76 ("cpufreq: powernv: Set the cpus to nominal frequency during reboot/kexec")
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Reviewed-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200922080254.41497-1-srikar@linux.vnet.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Srikar Dronamraju 2020-09-22 13:32:54 +05:30 committed by Greg Kroah-Hartman
parent 56c30ffe5f
commit bc2cba6b2d
1 changed files with 6 additions and 3 deletions
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9
drivers/cpufreq/powernv-cpufreq.c
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@ -884,12 +884,15 @@ static int powernv_cpufreq_reboot_notifier(struct notifier_block *nb,
unsigned long action, void *unused)
{
int cpu;
struct cpufreq_policy cpu_policy;
struct cpufreq_policy *cpu_policy;
rebooting = true;
for_each_online_cpu(cpu) {
cpufreq_get_policy(&cpu_policy, cpu);
powernv_cpufreq_target_index(&cpu_policy, get_nominal_index());
cpu_policy = cpufreq_cpu_get(cpu);
if (!cpu_policy)
continue;
powernv_cpufreq_target_index(cpu_policy, get_nominal_index());
cpufreq_cpu_put(cpu_policy);
}
return NOTIFY_DONE;