Commit a2d0230b authored by Srikar Dronamraju's avatar Srikar Dronamraju Committed by Michael Ellerman

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

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: default avatarSrikar Dronamraju <srikar@linux.vnet.ibm.com>
Reviewed-by: default avatarDaniel Axtens <dja@axtens.net>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200922080254.41497-1-srikar@linux.vnet.ibm.com
parent 9686e431
...@@ -885,12 +885,15 @@ static int powernv_cpufreq_reboot_notifier(struct notifier_block *nb, ...@@ -885,12 +885,15 @@ static int powernv_cpufreq_reboot_notifier(struct notifier_block *nb,
unsigned long action, void *unused) unsigned long action, void *unused)
{ {
int cpu; int cpu;
struct cpufreq_policy cpu_policy; struct cpufreq_policy *cpu_policy;
rebooting = true; rebooting = true;
for_each_online_cpu(cpu) { for_each_online_cpu(cpu) {
cpufreq_get_policy(&cpu_policy, cpu); cpu_policy = cpufreq_cpu_get(cpu);
powernv_cpufreq_target_index(&cpu_policy, get_nominal_index()); if (!cpu_policy)
continue;
powernv_cpufreq_target_index(cpu_policy, get_nominal_index());
cpufreq_cpu_put(cpu_policy);
} }
return NOTIFY_DONE; return NOTIFY_DONE;
......
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