> Is this safe? The driver is not using a threaded irq, and DMA termination > may be called from the interrupt handler. You are right, this will not work. Not my best day today, I overlooked it for i2c-rcar and lost the note pointing out the same issue for stm32f7 :( > Have you tried triggering DMA termination, with lockdep enabled? Nope. As the code didn't show signs of async nature, I assumed sync was desired anyhow.
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