From: Chris Wilson Date: Fri, 4 Dec 2020 15:12:31 +0000 (+0000) Subject: drm/i915/gt: Ignore repeated attempts to suspend request flow across reset X-Git-Tag: v5.9.15~13 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b20eb804cf6187ed96be15b59612449f42b404c9;p=thirdparty%2Fkernel%2Fstable.git drm/i915/gt: Ignore repeated attempts to suspend request flow across reset commit 5419d93ffd774127b195b8543b063b2b4fa5aea9 upstream. Before reseting the engine, we suspend the execution of the guilty request, so that we can continue execution with a new context while we slowly compress the captured error state for the guilty context. However, if the reset fails, we will promptly attempt to reset the same request again, and discover the ongoing capture. Ignore the second attempt to suspend and capture the same request. Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/1168 Fixes: 32ff621fd744 ("drm/i915/gt: Allow temporary suspension of inflight requests") Signed-off-by: Chris Wilson Cc: # v5.7+ Reviewed-by: Mika Kuoppala Link: https://patchwork.freedesktop.org/patch/msgid/20201204151234.19729-1-chris@chris-wilson.co.uk (cherry picked from commit b969540500bce60cf1cdfff5464388af32b9a553) Signed-off-by: Rodrigo Vivi Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index 9dfa9a95a4d73..336232624eed8 100644 --- a/drivers/gpu/drm/i915/gt/intel_lrc.c +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c @@ -2788,6 +2788,9 @@ static void __execlists_hold(struct i915_request *rq) static bool execlists_hold(struct intel_engine_cs *engine, struct i915_request *rq) { + if (i915_request_on_hold(rq)) + return false; + spin_lock_irq(&engine->active.lock); if (i915_request_completed(rq)) { /* too late! */