Re: [v2] HID: corsair-void: Add Corsair Void headset family driver
From: Stuart
Date: Thu Aug 22 2024 - 11:37:09 EST
On Thu, Aug 22, 2024 at 12:57 PM Jiri Kosina <jikos@xxxxxxxxxx> wrote:
> > > If I recollect correctly, there may be an alignment issue and just using
> > > the stack is not enough to guaranty what is needed.
> >
> > I can't find any reference to issues with it, I'm not sure what I saw before.
> > Also, it seems like the hid-asus driver is using it:
> > https://elixir.bootlin.com/linux/v6.11-rc4/source/drivers/hid/hid-asus.c#L391
>
> You can't do DMA from stack; see section "What memory is DMA'able?" of
> Documentation/core-api/dma-api-howto.rst
Thanks for the link, I knew I'd seen something somewhere,
I'll leave the allocation as-is then
Stuart