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Commit 94e791f5 authored by Srinivas Pandruvada's avatar Srinivas Pandruvada Committed by Zhang Rui
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Thermal: x86_pkg_temp: Limit number of pkg temp zones 



Although it is unlikley that physical package id is set to some
arbitary number, it is better to prevent in anycase. Since package
temp zones use this in thermal zone type and for allocation, added
a limit.

Signed-off-by: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: default avatarZhang Rui <rui.zhang@intel.com>
parent c7c1b311

drivers/thermal/x86_pkg_temp_thermal.c

+5 −0
Original line number Diff line number Diff line
@@ -54,6 +54,8 @@ MODULE_PARM_DESC(notify_delay_ms, 
* is some wrong values returned by cpuid for number of thresholds.

*/

#define MAX_NUMBER_OF_TRIPS	2

/* Limit number of package temp zones */

#define MAX_PKG_TEMP_ZONE_IDS	256



struct phy_dev_entry {

	struct list_head list;
@@ -401,6 +403,9 @@ static int pkg_temp_thermal_device_add(unsigned int cpu) 
	if (!thres_count)

		return -ENODEV;



	if (topology_physical_package_id(cpu) > MAX_PKG_TEMP_ZONE_IDS)

		return -ENODEV;



	thres_count = clamp_val(thres_count, 0, MAX_NUMBER_OF_TRIPS);



	err = get_tj_max(cpu, &tj_max);