[RFC PATCH] usb: gadget: dfu: Wrap fs operation in workqueue

[Jules Maselbas]

Hi Ahmad,

On Fri, Jan 29, 2021 at 10:51:18AM +0100, Ahmad Fatoum wrote:
> Hello Jules,
> 
> On 27.01.21 17:49, Jules Maselbas wrote:
> > File system operation shouldn't be executed in a poller. Use
> > a workqueue to delay filesystem operation to command context.
> > 
> > This is an RFC, extra work must be done to properly handle error
> > cases and dfu cleanup.
> 
> I erroneously thought the poller is within the DFU bits. I wonder what
> side-effect moving the whole USB gadget polling into a workqueue would
> have. In that case, we wouldn't need to any changes for DFU itself.
> 
If I understood correctly you're suggesting to wrap the entire dfu
gadget inside a poller. I have not tried this and it might work.
However wrapping each fs operation allow the dfu gadget to respond
to GET_STATUS queries will erase/write operation are on-going.

Jules