drm/radeon: fix active_cu mask on SI and CIK after re-init (v3)

Need to initialize the mask to 0 on init, otherwise it
keeps increasing.

bug:
https://bugzilla.kernel.org/show_bug.cgi?id=82581

v2: also fix cu count
v3: split count fix into separate patch

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Cc: stable@vger.kernel.org

2 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 23d56c689e12..f4e14702639d 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -3672,6 +3672,7 @@ static void cik_gpu_init(struct radeon_device *rdev)
                      rdev->config.cik.max_sh_per_se,
                      rdev->config.cik.max_backends_per_se);
 
+        rdev->config.cik.active_cus = 0;
         for (i = 0; i < rdev->config.cik.max_shader_engines; i++) {
                 for (j = 0; j < rdev->config.cik.max_sh_per_se; j++) {
                         rdev->config.cik.active_cus +=
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index c8f359ca64d1..a1274a31405c 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -3255,6 +3255,7 @@ static void si_gpu_init(struct radeon_device *rdev)
                      rdev->config.si.max_sh_per_se,
                      rdev->config.si.max_cu_per_sh);
 
+        rdev->config.si.active_cus = 0;
         for (i = 0; i < rdev->config.si.max_shader_engines; i++) {
                 for (j = 0; j < rdev->config.si.max_sh_per_se; j++) {
                         rdev->config.si.active_cus +=