linux-kernel - [PATCH 4/5] drm/i915/gvt: kill fetch_and

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Date:   Fri,  9 Dec 2022 16:48:42 +0100
From:   Andrzej Hajda <andrzej.hajda@...el.com>
To:     linux-kernel@...r.kernel.org, intel-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org
Cc:     Andrzej Hajda <andrzej.hajda@...el.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        Andi Shyti <andi.shyti@...ux.intel.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 4/5] drm/i915/gvt: kill fetch_and_zero usage

Better use recently introduced kernel core helper.

Signed-off-by: Andrzej Hajda <andrzej.hajda@...el.com>
---
 drivers/gpu/drm/i915/gvt/kvmgt.c     | 2 +-
 drivers/gpu/drm/i915/gvt/scheduler.c | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index 077892a9aa8fdc..061302abb0a189 100644
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -1831,7 +1831,7 @@ static int init_service_thread(struct intel_gvt *gvt)
  */
 static void intel_gvt_clean_device(struct drm_i915_private *i915)
 {
-	struct intel_gvt *gvt = fetch_and_zero(&i915->gvt);
+	struct intel_gvt *gvt = exchange(&i915->gvt, NULL);
 
 	if (drm_WARN_ON(&i915->drm, !gvt))
 		return;
diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c
index 9cd8fcbf7cad16..6699135f366f3f 100644
--- a/drivers/gpu/drm/i915/gvt/scheduler.c
+++ b/drivers/gpu/drm/i915/gvt/scheduler.c
@@ -826,7 +826,7 @@ static int dispatch_workload(struct intel_vgpu_workload *workload)
 		/* We might still need to add request with
 		 * clean ctx to retire it properly..
 		 */
-		rq = fetch_and_zero(&workload->req);
+		rq = exchange(&workload->req, NULL);
 		i915_request_put(rq);
 	}
 
@@ -1103,7 +1103,7 @@ static void complete_current_workload(struct intel_gvt *gvt, int ring_id)
 				intel_vgpu_trigger_virtual_event(vgpu, event);
 		}
 
-		i915_request_put(fetch_and_zero(&workload->req));
+		i915_request_put(exchange(&workload->req, 0));
 	}
 
 	gvt_dbg_sched("ring id %d complete workload %p status %d\n",
-- 
2.34.1