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thermal: sysfs: use kcalloc() instead of kzalloc() 

Simplify size computation by using kcalloc() for
allocating memory for arrays.

Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This commit is contained in:
Eduardo Valentin 2016-11-07 21:09:26 -08:00 committed by Zhang Rui
parent 95e3ed1513
commit b819dc9ef0
1 changed files with 8 additions and 5 deletions
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13
drivers/thermal/thermal_sysfs.c
View File

@ -511,7 +511,6 @@ static const struct attribute_group *thermal_zone_attribute_groups[] = {
*/ */
static int create_trip_attrs(struct thermal_zone_device *tz, int mask) static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
{ {
int size = sizeof(struct thermal_attr) * tz->trips;
struct attribute **attrs; struct attribute **attrs;
int indx; int indx;
@ -519,18 +518,22 @@ static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
if (tz->trips <= 0) if (tz->trips <= 0)
return -EINVAL; return -EINVAL;
tz->trip_type_attrs = kzalloc(size, GFP_KERNEL); tz->trip_type_attrs = kcalloc(tz->trips, sizeof(*tz->trip_type_attrs),
GFP_KERNEL);
if (!tz->trip_type_attrs) if (!tz->trip_type_attrs)
return -ENOMEM; return -ENOMEM;
tz->trip_temp_attrs = kzalloc(size, GFP_KERNEL); tz->trip_temp_attrs = kcalloc(tz->trips, sizeof(*tz->trip_temp_attrs),
GFP_KERNEL);
if (!tz->trip_temp_attrs) { if (!tz->trip_temp_attrs) {
kfree(tz->trip_type_attrs); kfree(tz->trip_type_attrs);
return -ENOMEM; return -ENOMEM;
} }
if (tz->ops->get_trip_hyst) { if (tz->ops->get_trip_hyst) {
tz->trip_hyst_attrs = kzalloc(size, GFP_KERNEL); tz->trip_hyst_attrs = kcalloc(tz->trips,
sizeof(*tz->trip_hyst_attrs),
GFP_KERNEL);
if (!tz->trip_hyst_attrs) { if (!tz->trip_hyst_attrs) {
kfree(tz->trip_type_attrs); kfree(tz->trip_type_attrs);
kfree(tz->trip_temp_attrs); kfree(tz->trip_temp_attrs);
@ -538,7 +541,7 @@ static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
} }
} }
attrs = kzalloc(sizeof(*attrs) * tz->trips * 3 + 1, GFP_KERNEL); attrs = kcalloc(tz->trips * 3 + 1, sizeof(*attrs), GFP_KERNEL);
if (!attrs) { if (!attrs) {
kfree(tz->trip_type_attrs); kfree(tz->trip_type_attrs);
kfree(tz->trip_temp_attrs); kfree(tz->trip_temp_attrs);