From: Evan Quan <evan.quan@amd.com>
Date: Sun, 5 May 2019 03:00:50 +0000 (+0800)
Subject: drm/amd/powerplay: check for invalid profile_exit setting
X-Git-Tag: v5.2-rc1~48^2~3^2~2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=db8a974f7e6966d73b4e6afa673c5b8bc31a111e;p=thirdparty%2Fkernel%2Flinux.git

drm/amd/powerplay: check for invalid profile_exit setting

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

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
index 95144e49c7f9d..34471dbaa872a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
@@ -342,6 +342,16 @@ 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) {