cpumask: use zalloc_cpumask_var() where possible

Remove open-coded zalloc_cpumask_var() and zalloc_cpumask_var_node().

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index 11088cf10319..8ba0ed0b9ddb 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -511,7 +511,7 @@ int acpi_processor_preregister_performance(
         struct acpi_processor *match_pr;
         struct acpi_psd_package *match_pdomain;
 
-        if (!alloc_cpumask_var(&covered_cpus, GFP_KERNEL))
+        if (!zalloc_cpumask_var(&covered_cpus, GFP_KERNEL))
                 return -ENOMEM;
 
         mutex_lock(&performance_mutex);
@@ -558,7 +558,6 @@ int acpi_processor_preregister_performance(
          * Now that we have _PSD data from all CPUs, lets setup P-state 
          * domain info.
          */
-        cpumask_clear(covered_cpus);
         for_each_possible_cpu(i) {
                 pr = per_cpu(processors, i);
                 if (!pr)