[Intel-gfx] [PATCH v3 12/13] drm/i915/gen9: flush DMC fw loading work during system suspend

Imre Deak imre.deak at intel.com
Wed Oct 28 14:59:06 PDT 2015

Currently during system s/r we enable/disable DC6, so before we do so
make sure that the firmware loading is complete.

Note that whether we need to enable DC6 for S3/S4 is still open.  At
least the firmware program is lost during S3 and we need to reprogram it
after resuming. Until this is clarified we keep the current behavior and
enable/disable DC6.

Signed-off-by: Imre Deak <imre.deak at intel.com>
 drivers/gpu/drm/i915/i915_drv.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 96650ed..6de2287 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -656,6 +656,9 @@ static int i915_drm_suspend(struct drm_device *dev)
 	intel_display_set_init_power(dev_priv, false);
+	if (HAS_CSR(dev_priv))
+		flush_work(&dev_priv->csr.work);
 	return 0;

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