diff mbox series

[8/8] drm/i915/gt: Use memset_p to clear the ports

Message ID 20200106102227.2438478-8-chris@chris-wilson.co.uk (mailing list archive)
State New, archived
Headers show
Series [1/8] drm/i915/selftests: Fixup sparse __user annotation on local var | expand

Commit Message

Chris Wilson Jan. 6, 2020, 10:22 a.m. UTC 
Put memset_p to use to set the array of pointers used for tracking the
ELSP.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/gt/intel_lrc.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index 28c05e7a1510..29b82fc24b2a 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -1744,6 +1744,11 @@  static void set_preempt_timeout(struct intel_engine_cs *engine)
 		     active_preempt_timeout(engine));
 }
 
+static inline void clear_ports(struct i915_request **ports, int count)
+{
+	memset_p((void **)ports, NULL, count);
+}
+
 static void execlists_dequeue(struct intel_engine_cs *engine)
 {
 	struct intel_engine_execlists * const execlists = &engine->execlists;
@@ -2105,7 +2110,7 @@  static void execlists_dequeue(struct intel_engine_cs *engine)
 			goto skip_submit;
 		}
 
-		memset(port + 1, 0, (last_port - port) * sizeof(*port));
+		clear_ports(port + 1, last_port - port);
 		execlists_submit_ports(engine);
 
 		set_preempt_timeout(engine);
@@ -2122,13 +2127,14 @@  cancel_port_requests(struct intel_engine_execlists * const execlists)
 
 	for (port = execlists->pending; *port; port++)
 		execlists_schedule_out(*port);
-	memset(execlists->pending, 0, sizeof(execlists->pending));
+	clear_ports(execlists->pending, ARRAY_SIZE(execlists->pending));
 
 	/* Mark the end of active before we overwrite *active */
 	for (port = xchg(&execlists->active, execlists->pending); *port; port++)
 		execlists_schedule_out(*port);
-	WRITE_ONCE(execlists->active,
-		   memset(execlists->inflight, 0, sizeof(execlists->inflight)));
+	clear_ports(execlists->inflight, ARRAY_SIZE(execlists->inflight));
+
+	WRITE_ONCE(execlists->active, execlists->inflight);
 }
 
 static inline void