drm/xe: Prevent VFs from exposing the CCS mode sysfs file

Skip creating CCS sysfs files in VF mode to ensure VFs do not
try to change CCS mode, as it is predefined and immutable in
the SR-IOV mode.

Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Nareshkumar Gollakoti <naresh.kumar.g@intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patch.msgid.link/20260202170810.1393147-5-naresh.kumar.g@intel.com

diff --git a/drivers/gpu/drm/xe/xe_gt_ccs_mode.c b/drivers/gpu/drm/xe/xe_gt_ccs_mode.c
index 91ac22ef5703b312922a2a10bd5cbb58a55a7795..fe944687728cd80a05f6871891bb6c195ba1360e 100644 (file)
--- a/drivers/gpu/drm/xe/xe_gt_ccs_mode.c
+++ b/drivers/gpu/drm/xe/xe_gt_ccs_mode.c
@@ -191,7 +191,7 @@ int xe_gt_ccs_mode_sysfs_init(struct xe_gt *gt)
        struct xe_device *xe = gt_to_xe(gt);
        int err;
 
-       if (!xe_gt_ccs_mode_enabled(gt))
+       if (!xe_gt_ccs_mode_enabled(gt) || IS_SRIOV_VF(xe))
                return 0;
 
        err = sysfs_create_files(gt->sysfs, gt_ccs_mode_attrs);