Messages in this thread | | | Date | Thu, 29 Dec 2022 15:20:10 +0100 | From | Takashi Iwai <> | Subject | Re: [RFC PATCH 04/14] sound: usb: card: Introduce USB SND vendor op callbacks |
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On Thu, 29 Dec 2022 14:49:21 +0100, Oliver Neukum wrote: > > > > On 24.12.22 00:31, Wesley Cheng wrote: > > Allow for different vendors to be notified on USB SND connect/disconnect > > seqeunces. This allows for vendor USB SND modules to properly initialize > > and populate internal structures with references to the USB SND chip > > device. > > Hi, > > this raises a design question. If the system is suspending or, worse, > hibernating, how do you make sure the offloader and the device are > suspended in the correct order? > And what happens if you need to go into reset_resume() when resuming?
I guess we'd need to establish a device link when the binding from the offload driver is done. Then the PM order will be assured.
Takashi
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