Re: [PATCH 4/7] usb: misc: uss720: point pp->dev to usbdev->dev

[Johan Hovold <johan@kernel.org>]

On Tue, Mar 12, 2024 at 07:30:21PM -0600, Alex Henrie wrote:
> On Tue, Mar 12, 2024 at 1:39 AM Johan Hovold <johan@kernel.org> wrote:
> >
> > On Mon, Mar 11, 2024 at 11:50:29PM -0600, Alex Henrie wrote:
> > > This avoids a "fix this legacy no-device port driver" warning.
> >
> > Please be more specific.
> 
> Hello Johan, thanks for taking a look at these patches.
> 
> The warning comes from parport_announce_port in
> drivers/parport/share.c. include/linux/parport.h says that dev is the
> "Physical device associated with IO/DMA." Commit 4edb38695d9a
> ("parisc: parport0: fix this legacy no-device port driver!",
> 2013-05-30) fixed a similar issue and says only "Fix the above kernel
> error from parport_announce_port() on 32bit GSC machines (e.g. B160L).
> The parport driver requires now a pointer to the device struct."
> 
> Do I just need to include "The parport driver now requires a pointer
> to the device struct" in the commit message? If not, where can I learn
> more about what the dev field is for, to be able to write a better
> description of why it's necessary to fill it in?

Your commit messages need to be self-contained and explain *why* you
think your proposed change is needed, and in enough detail that a
reviewer can make a judgement as to whether the patch is correct or not.

Basically all my comments were just pointing this out.

Johan