From: Michal Wajdeczko <michal.wajdeczko@intel.com>
Date: Wed, 19 Jun 2024 21:45:56 +0000 (+0200)
Subject: drm/xe/vf: Skip engine ring enabling if VF
X-Git-Tag: v6.11-rc1~141^2~16^2~17
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=7875fe7c2495884dd08d4a23fdc44147225542da;p=thirdparty%2Fkernel%2Flinux.git

drm/xe/vf: Skip engine ring enabling if VF

All engines will be correctly initialized by the PF driver.
Moreover, VF drivers can't access related engine registers.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240619214557.905-9-michal.wajdeczko@intel.com
---

diff --git a/drivers/gpu/drm/xe/xe_hw_engine.c b/drivers/gpu/drm/xe/xe_hw_engine.c
index 52f12009678e9..78b50d3a65010 100644
--- a/drivers/gpu/drm/xe/xe_hw_engine.c
+++ b/drivers/gpu/drm/xe/xe_hw_engine.c
@@ -547,7 +547,8 @@ static int hw_engine_init(struct xe_gt *gt, struct xe_hw_engine *hwe,
 		if (hwe->class == XE_ENGINE_CLASS_OTHER)
 			hwe->irq_handler = xe_gsc_hwe_irq_handler;
 
-		xe_hw_engine_enable_ring(hwe);
+		if (!IS_SRIOV_VF(xe))
+			xe_hw_engine_enable_ring(hwe);
 	}
 
 	/* We reserve the highest BCS instance for USM */