From 636deb5b2277cf57bb0f5e00fc9687de9a96061e Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Sun, 12 Feb 2017 21:53:43 +0000 Subject: [PATCH] drm/i915: Pass timeout==0 on to i915_gem_object_wait_fence() The i915_gem_object_wait_fence() uses an incoming timeout=0 to query whether the current fence is busy or idle, without waiting. This can be used by the wait-ioctl to implement a busy query. Fixes: e95433c73a11 ("drm/i915: Rearrange i915_wait_request() accounting with callers") Testcase: igt/gem_wait/basic-busy-write-all Signed-off-by: Chris Wilson Cc: Matthew Auld Cc: Joonas Lahtinen Cc: # v4.10-rc1+ Cc: stable@vger.kernel.org Link: http://patchwork.freedesktop.org/patch/msgid/20170212215344.16600-1-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen (cherry picked from commit d892e9398ecf6defc7972a62227b77dad6be20bd) Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/i915_gem.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index c7eba361c14d..a51b134038a0 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -440,7 +440,7 @@ i915_gem_object_wait_reservation(struct reservation_object *resv, timeout = i915_gem_object_wait_fence(shared[i], flags, timeout, rps); - if (timeout <= 0) + if (timeout < 0) break; dma_fence_put(shared[i]); @@ -453,7 +453,7 @@ i915_gem_object_wait_reservation(struct reservation_object *resv, excl = reservation_object_get_excl_rcu(resv); } - if (excl && timeout > 0) + if (excl && timeout >= 0) timeout = i915_gem_object_wait_fence(excl, flags, timeout, rps); dma_fence_put(excl); -- 2.20.1