Re: [PATCH 5/7] i2c: rcar: : use proper DMAENGINE API for termination
From: Wolfram Sang
Date: Wed Jun 23 2021 - 10:08:21 EST
> 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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