Re: [PATCH] net/wireless: enable wiphy device to suspend/resume asynchronously
From: Johannes Berg
Date: Thu Aug 13 2015 - 09:13:53 EST
On Thu, 2015-07-30 at 08:55 +0300, Emmanuel Grumbach wrote:
> On Thu, Jul 30, 2015 at 8:18 AM, Fu, Zhonghui
> <zhonghui.fu@xxxxxxxxxxxxxxx> wrote:
> > Enable wiphy device to suspend/resume asynchronously. This can
> > improve
> > system suspend/resume speed.
> How will that impact the timing with respect to the suspend call
> coming from the bus?
> I think that a few drivers rely on the suspend call of the wiphy
> device happening before the suspend call to the bus device.
Yes, we can't do this for precisely this reason unless we have a way to
somehow keep the dependency between the two - possibly by also marking
the other one as async (although I don't know if the async framework in
general has any FIFO guarantees, which would be required for this.)
I've dropped the patch.
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