From: Asad Kamal <asad.kamal@amd.com>
Date: Thu, 6 Nov 2025 15:47:29 +0000 (+0800)
Subject: drm/amd/pm: Add NULL check for power limit
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=42993bcf1c8d773d783a613d2d4e9172c16b4926;p=thirdparty%2Fkernel%2Flinux.git

drm/amd/pm: Add NULL check for power limit

Add NULL check for smu power limit pointer

v2: Update error code on failure (Lijo)

Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index c0e7c45ac0e61..14351ec707016 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -2907,6 +2907,9 @@ int smu_get_power_limit(void *handle,
 	if (!smu->pm_enabled || !smu->adev->pm.dpm_enabled)
 		return -EOPNOTSUPP;
 
+	if  (!limit)
+		return -EINVAL;
+
 	switch (pp_power_type) {
 	case PP_PWR_TYPE_SUSTAINED:
 		limit_type = SMU_DEFAULT_PPT_LIMIT;