[PATCH] drm/amd/pm: Add NULL check for power limit

[Asad Kamal]

Add NULL check for smu power limit pointer

Signed-off-by: Asad Kamal <asad.ka...@amd.com>
---
 drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c 
b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index 8b49fb86c77b..835e9c9da521 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 -ENOMEM;
+
        switch (pp_power_type) {
        case PP_PWR_TYPE_SUSTAINED:
                limit_type = SMU_DEFAULT_PPT_LIMIT;
-- 
2.46.0