[PATCH] drm/amd/powerplay: check for invalid profile_exit setting

[Evan Quan]

profile_exit performance level setting is valid only
when current mode is in profile mode.

Change-Id: I6940102d38dbb7a4b0233fce5277e1704672d8f4
Signed-off-by: Evan Quan <evan.quan at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
index b80873348624..df78372296bf 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
@@ -404,6 +404,16 @@ static ssize_t amdgpu_set_dpm_forced_performance_level(struct device *dev,
 	if (current_level == level)
 		return count;
 
+	/* profile_exit setting is valid only when current mode is in profile mode */
+	if (!(current_level & (AMD_DPM_FORCED_LEVEL_PROFILE_STANDARD |
+	    AMD_DPM_FORCED_LEVEL_PROFILE_MIN_SCLK |
+	    AMD_DPM_FORCED_LEVEL_PROFILE_MIN_MCLK |
+	    AMD_DPM_FORCED_LEVEL_PROFILE_PEAK)) &&
+	    (level == AMD_DPM_FORCED_LEVEL_PROFILE_EXIT)) {
+		pr_err("Currently not in any profile mode!\n");
+		return -EINVAL;
+	}
+
 	if (is_support_sw_smu(adev)) {
 		mutex_lock(&adev->pm.mutex);
 		if (adev->pm.dpm.thermal_active) {
-- 
2.21.0