linux-kernel - Re: [PATCH v2][next] tty: sunsu: Simplify device_node cleanup by using _

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Message-ID: <2024050402-eraser-stimulate-3908@gregkh>
Date: Sat, 4 May 2024 18:02:20 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Shresth Prasad <shresthprasad7@...il.com>
Cc: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	davem@...emloft.net, jirislaby@...nel.org,
	sparclinux@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org, javier.carrasco.cruz@...il.com,
	skhan@...uxfoundation.org, Julia Lawall <julia.lawall@...ia.fr>
Subject: Re: [PATCH v2][next] tty: sunsu: Simplify device_node cleanup by
 using __free

On Fri, May 03, 2024 at 02:31:22PM +0530, Shresth Prasad wrote:
> On Fri, May 3, 2024 at 11:04 AM Greg KH <gregkh@...uxfoundation.org> wrote:
> >
> > On Thu, May 02, 2024 at 10:21:16PM +0530, Shresth Prasad wrote:
> > > On Thu, May 2, 2024 at 9:35 PM Ilpo Järvinen
> > > <ilpo.jarvinen@...ux.intel.com> wrote:
> > > >
> > > > On Wed, 1 May 2024, Shresth Prasad wrote:
> > > >
> > > > > Add `__free` function attribute to `ap` and `match` pointer
> > > > > initialisations which ensure that the pointers are freed as soon as they
> > > > > go out of scope, thus removing the need to manually free them using
> > > > > `of_node_put`.
> > > > >
> > > > > This also removes the need for the `goto` statement and the `rc`
> > > > > variable.
> > > > >
> > > > > Tested using a qemu x86_64 virtual machine.
> > > >
> > > > Eh, how can you test this with an x86_64 VM ???
> > > >
> > > > config SERIAL_SUNSU
> > > >         tristate "Sun SU serial support"
> > > >         depends on SPARC && PCI
> > > >
> > >
> > > By that, I mean that I compiled the kernel and ran the produced bzImage
> > > on a x86_64 qemu machine.
> >
> > But you didn't include the driver you were testing :(
> >
> > > I unfortunately don't have the hardware to test it on, but I don't
> > > think the change is complex enough to require testing on real hardware
> > > (unless I'm assuming incorrectly).
> >
> > That's why I asked if you had tested this or not...
> >
> 
> Really sorry about that, I thought compiling and booting would qualify
> as testing. What should I be doing then?

Compiling and booting the code you change would be a good start :)

thanks,

greg k-h