cpufreq: use kzalloc() to allocate memory for cpufreq_frequency_table
Few drivers are using kmalloc() to allocate memory for frequency
tables and since we will have an additional field '.flags' in
'struct cpufreq_frequency_table', these might become unstable.
Better get these fixed by replacing kmalloc() by kzalloc() instead.
Along with that we also remove use of .driver_data from SPEAr driver
as it doesn't use it at all. Also, writing zero to .driver_data is not
required for powernow-k8 as it is already zero.
Reported-and-reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/drivers/cpufreq/s3c24xx-cpufreq.c b/drivers/cpufreq/s3c24xx-cpufreq.c
index a3dc192..be1b2b5 100644
--- a/drivers/cpufreq/s3c24xx-cpufreq.c
+++ b/drivers/cpufreq/s3c24xx-cpufreq.c
@@ -586,7 +586,7 @@
size = cpu_cur.info->calc_freqtable(&cpu_cur, NULL, 0);
size++;
- ftab = kmalloc(sizeof(*ftab) * size, GFP_KERNEL);
+ ftab = kzalloc(sizeof(*ftab) * size, GFP_KERNEL);
if (!ftab) {
printk(KERN_ERR "%s: no memory for tables\n", __func__);
return -ENOMEM;
@@ -664,7 +664,7 @@
size = sizeof(*vals) * (plls_no + 1);
- vals = kmalloc(size, GFP_KERNEL);
+ vals = kzalloc(size, GFP_KERNEL);
if (vals) {
memcpy(vals, plls, size);
pll_reg = vals;