diff mbox series

[v2] cpufreq: amd-pstate: fix the memory to free after epp exist

Message ID PUZPR01MB51206C1D9F3E2005B5BECCBA92E32@PUZPR01MB5120.apcprd01.prod.exchangelabs.com
State New
Headers show
Series [v2] cpufreq: amd-pstate: fix the memory to free after epp exist | expand

Commit Message

zhida312@outlook.com May 14, 2024, 6:43 a.m. UTC 
From: andypma <andypma.tencent.com>

the cpudata memory from kzmalloc in epp init function is
not free after epp exist, so we should free it.

Signed-off-by: andypma <andypma@tencent.com>

Changes since v1:
	check whether it is empty before releasing.
	set driver_data is NULL after free.
---
 drivers/cpufreq/amd-pstate.c | 7 +++++++
 1 file changed, 7 insertions(+)
diff mbox series

Patch

diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index 6a342b0c0140..e100c5b6c9b2 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -1441,6 +1441,13 @@  static int amd_pstate_epp_cpu_init(struct cpufreq_policy *policy)
 
 static int amd_pstate_epp_cpu_exit(struct cpufreq_policy *policy)
 {
+	struct amd_cpudata *cpudata = policy->driver_data;
+
+	if(cpudata) {
+		kfree(cpudata);
+		policy->driver_data = NULL;
+	}
+
 	pr_debug("CPU %d exiting\n", policy->cpu);
 	return 0;
 }