[Intel-gfx] [PATCH] drm/i915: Stop using flush_scheduled_work on driver remove

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

Kernel is trying to eliminate callers of flush_scheduled_work so lets
try to accommodate.

We currently call it from intel_modeset_driver_remove_noirq on the driver
remove path but the comment next to it does not tell me what exact work it
wants to flush.

I can spot three (or four) works using the system_wq:

  ..hotplug.reenable_work
  ..hotplug.hotplug_work
  ..psr.dc3co_work
  ..crtc->drrs.work

So if I replace it with intel_hpd_cancel_work() that appears would handle
the first two. What about the other two?

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Cc: Jani Nikula <jani.nikula at intel.com>
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Cc: Tetsuo Handa <penguin-kernel at I-love.SAKURA.ne.jp>
---
I am clueless about the display paths and only send this because Jani
convinced me to send a patch to kick off the discussion. No expectations
whatsoever this is correct or complete.
---
 drivers/gpu/drm/i915/display/intel_display.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 2d0018ae34b1..0eb72530a003 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -8980,7 +8980,7 @@ void intel_modeset_driver_remove_noirq(struct drm_i915_private *i915)
 	intel_unregister_dsm_handler();
 
 	/* flush any delayed tasks or pending work */
-	flush_scheduled_work();
+	intel_hpd_cancel_work(i915);
 
 	intel_hdcp_component_fini(i915);
 
-- 
2.34.1