Re: [PATCH] ASoC: fsl: imx-pcm-dma: Don't request dma channel in probe

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On Wed, Apr 21, 2021 at 07:43:18PM +0200, Lucas Stach wrote:

> If your driver code drops the rpm refcount to 0 and starts the
> autosuspend timer while a cyclic transfer is still in flight this is
> clearly a bug. Autosuspend is not there to paper over driver bugs, but
> to amortize cost of actually suspending and resuming the hardware. Your
> driver code must still work even if the timeout is 0, i.e. the hardware
> is immediately suspended after you drop the rpm refcount to 0.

> If you still have transfers queued/in-flight the driver code must keep
> a rpm reference.

Right, failing to do that is a clear bug.

Please delete unneeded context from mails when replying.  Doing this
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