[nce] handles duplicate NCE interrupts (#4530)

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Another crash observed in Ender Magnolia: A deadlock caused between CPUCore_0/GPU/GPUFencingThread.

CPUCore_0 waits for GPU work inside the NCE fault handler
GPU waits for the syncpoint mutex
GPUFencingThread holds that mutex while waiting for CPUCore_0 NCE interrupt lock

The fix makes duplicate interrupts return before acquiring the lock, while the first request keeps its original behavior.

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4530
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-by: Shinmegumi <shinmegumi@eden-emu.dev>

0 files changed, 0 insertions, 0 deletions