From: Matthew Brost <matthew.brost@intel.com>
Date: Tue, 27 Jul 2021 00:23:19 +0000 (-0700)
Subject: drm/i915/guc: Disable bonding extension with GuC submission
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b02d86b915709155b3c61f97be44251bfdcd4834;p=linux.git

drm/i915/guc: Disable bonding extension with GuC submission

Update the bonding extension to return -ENODEV when using GuC submission
as this extension fundamentally will not work with the GuC submission
interface.

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210727002348.97202-5-matthew.brost@intel.com
---

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index bc52eeed782ab..e3df01a201d7f 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -491,6 +491,11 @@ set_proto_ctx_engines_bond(struct i915_user_extension __user *base, void *data)
 		return -EINVAL;
 	}
 
+	if (intel_engine_uses_guc(master)) {
+		DRM_DEBUG("bonding extension not supported with GuC submission");
+		return -ENODEV;
+	}
+
 	if (get_user(num_bonds, &ext->num_bonds))
 		return -EFAULT;