Remove the "safety-factor" in our udelays for i915_do_reset(). If we are told to hold the line high for 20us, do it only for 20us plus the tiny bit of udelay latency. Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/i915_reset.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_reset.c b/drivers/gpu/drm/i915/i915_reset.c index 1911e00d2581..280f0e35cb3d 100644 --- a/drivers/gpu/drm/i915/i915_reset.c +++ b/drivers/gpu/drm/i915/i915_reset.c @@ -162,12 +162,12 @@ static int i915_do_reset(struct drm_i915_private *i915, /* Assert reset for at least 20 usec, and wait for acknowledgement. */ pci_write_config_byte(pdev, I915_GDRST, GRDOM_RESET_ENABLE); - udelay(50); + udelay(20); err = wait_for_atomic(i915_in_reset(pdev), 50); /* Clear the reset request. */ pci_write_config_byte(pdev, I915_GDRST, 0); - udelay(50); + udelay(20); if (!err) err = wait_for_atomic(!i915_in_reset(pdev), 50); -- 2.20.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
