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ACPI: pdc init related memory leak with physical CPU hotplug

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arch_acpi_processor_cleanup_pdc() in x86 and ia64 results in memory allocated
for _PDC objects that is never freed and will cause memory leak in case of
physical CPU remove and add. Patch fixes the memory leak by freeing the
objects soon after _PDC is evaluated.

Reported-by: Bjorn Helgaas <[email protected]>
Signed-off-by: Venkatesh Pallipadi <[email protected]>
Signed-off-by: Len Brown <[email protected]>
This commit is contained in:
Pallipadi, Venkatesh 2009-06-19 17:14:59 -07:00 • committed by Len Brown
commit 7b768f07dc
4 changed files with 28 additions and 0 deletions
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2
drivers/acpi/processor_core.c
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@ -731,6 +731,8 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device)
/* _PDC call should be done before doing anything else (if reqd.). */
arch_acpi_processor_init_pdc(pr);
acpi_processor_set_pdc(pr);
arch_acpi_processor_cleanup_pdc(pr);
#ifdef CONFIG_CPU_FREQ
acpi_processor_ppc_has_changed(pr);
#endif