use xzalloc in driver code

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>

2 files changed, 6 insertions, 13 deletions

diff --git a/xen/drivers/cpufreq/cpufreq.c b/xen/drivers/cpufreq/cpufreq.c
index a44a444580..cf36de8011 100644
--- a/xen/drivers/cpufreq/cpufreq.c
+++ b/xen/drivers/cpufreq/cpufreq.c
@@ -148,11 +148,10 @@ int cpufreq_add_cpu(unsigned int cpu)
     }
 
     if (!domexist) {
-        cpufreq_dom = xmalloc(struct cpufreq_dom);
+        cpufreq_dom = xzalloc(struct cpufreq_dom);
         if (!cpufreq_dom)
             return -ENOMEM;
 
-        memset(cpufreq_dom, 0, sizeof(struct cpufreq_dom));
         cpufreq_dom->dom = dom;
         list_add(&cpufreq_dom->node, &cpufreq_dom_list_head);
     } else {
@@ -176,11 +175,10 @@ int cpufreq_add_cpu(unsigned int cpu)
     }
 
     if (!domexist || hw_all) {
-        policy = xmalloc(struct cpufreq_policy);
+        policy = xzalloc(struct cpufreq_policy);
         if (!policy)
             ret = -ENOMEM;
 
-        memset(policy, 0, sizeof(struct cpufreq_policy));
         policy->cpu = cpu;
         per_cpu(cpufreq_cpu_policy, cpu) = policy;
 
@@ -374,13 +372,12 @@ int set_px_pminfo(uint32_t acpi_id, struct xen_processor_performance *dom0_px_in
     pmpt = processor_pminfo[cpuid];
     if ( !pmpt )
     {
-        pmpt = xmalloc(struct processor_pminfo);
+        pmpt = xzalloc(struct processor_pminfo);
         if ( !pmpt )
         {
             ret = -ENOMEM;
             goto out;
         }
-        memset(pmpt, 0, sizeof(*pmpt));
         processor_pminfo[cpuid] = pmpt;
     }
     pxpt = &pmpt->perf;
diff --git a/xen/drivers/cpufreq/utility.c b/xen/drivers/cpufreq/utility.c
index 8fb349246e..800438d136 100644
--- a/xen/drivers/cpufreq/utility.c
+++ b/xen/drivers/cpufreq/utility.c
@@ -110,22 +110,21 @@ int cpufreq_statistic_init(unsigned int cpuid)
 
     count = pmpt->perf.state_count;
 
-    pxpt = xmalloc(struct pm_px);
+    pxpt = xzalloc(struct pm_px);
     if ( !pxpt ) {
         spin_unlock(cpufreq_statistic_lock);
         return -ENOMEM;
     }
-    memset(pxpt, 0, sizeof(*pxpt));
     per_cpu(cpufreq_statistic_data, cpuid) = pxpt;
 
-    pxpt->u.trans_pt = xmalloc_array(uint64_t, count * count);
+    pxpt->u.trans_pt = xzalloc_array(uint64_t, count * count);
     if (!pxpt->u.trans_pt) {
         xfree(pxpt);
         spin_unlock(cpufreq_statistic_lock);
         return -ENOMEM;
     }
 
-    pxpt->u.pt = xmalloc_array(struct pm_px_val, count);
+    pxpt->u.pt = xzalloc_array(struct pm_px_val, count);
     if (!pxpt->u.pt) {
         xfree(pxpt->u.trans_pt);
         xfree(pxpt);
@@ -133,9 +132,6 @@ int cpufreq_statistic_init(unsigned int cpuid)
         return -ENOMEM;
     }
 
-    memset(pxpt->u.trans_pt, 0, count * count * (sizeof(uint64_t)));
-    memset(pxpt->u.pt, 0, count * (sizeof(struct pm_px_val)));
-
     pxpt->u.total = pmpt->perf.state_count;
     pxpt->u.usable = pmpt->perf.state_count - pmpt->perf.platform_limit;