From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Thu, 7 Apr 2016 06:29:16 +0000 (+0100)
Subject: drm/i915: Reset engine->last_submitted_seqno
X-Git-Tag: v4.7-rc1~77^2~60^2~21
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=01347126f4e2a346bf37fe264570563b0fab6618;p=karo-tx-linux.git

drm/i915: Reset engine->last_submitted_seqno

When we change the current seqno, we also need to remember to reset the
last_submitted_seqno for the engine.

Testcase: igt/gem_exec_whisper
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1460010558-10705-7-git-send-email-chris@chris-wilson.co.uk
---

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 0e6490074011..6b4952031e30 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -2578,6 +2578,7 @@ void intel_ring_init_seqno(struct intel_engine_cs *engine, u32 seqno)
 	       sizeof(engine->semaphore.sync_seqno));
 
 	engine->set_seqno(engine, seqno);
+	engine->last_submitted_seqno = seqno;
 
 	engine->hangcheck.seqno = seqno;
 }