[Intel-gfx] [PATCH 4/7] drm/i915: Remove irq-related FIXME in reset code

[Daniel Vetter]

With the two-step reset counter increments which braket the actual
reset code and the subsequent wake-up we're guaranteeing that all the
lockless waiters _will_ be woken up. And since we unconditionally bail
out of waits with -EAGAIN (or -EIO) in that case there is not risk of
lost interrupt enabling bits when the lockless wait code races against
a gpu reset.

Let's remove this FIXME as resolved then.

Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
---
 drivers/gpu/drm/i915/i915_drv.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index cc6c51107047..89741e6e2d08 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -878,12 +878,6 @@ int i915_reset(struct drm_device *dev)
 	}
 
 	/*
-	 * FIXME: This races pretty badly against concurrent holders of
-	 * ring interrupts. This is possible since we've started to drop
-	 * dev->struct_mutex in select places when waiting for the gpu.
-	 */
-
-	/*
 	 * rps/rc6 re-init is necessary to restore state lost after the
 	 * reset and the re-install of gt irqs. Skip for ironlake per
 	 * previous concerns that it doesn't respond well to some forms
-- 
2.1.4