Thanks Sebastian and Maarten. I understand this fix is already covered by Maarten's i915 PREEMPT_RT series and that the series is still pending review.
I'll drop this standalone patch and won't pursue a stable-targeted version. This issue was independently found by our static analysis and validated with a no-device QEMU harness. If the extra analysis or validation details are useful for the ongoing series, I can share them separately. Best regards, Runyu
