linux-kernel - Re: [PATCH 7/8] intel_th: Convert to platform remove callback returning void

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Date: Thu, 11 Apr 2024 09:07:02 +0200
From: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To: Alexander Shishkin <alexander.shishkin@...ux.intel.com>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-kernel@...r.kernel.org, kernel@...gutronix.de
Subject: Re: [PATCH 7/8] intel_th: Convert to platform remove callback
 returning void

Hello Alex,

On Wed, Feb 21, 2024 at 08:50:32PM +0200, Alexander Shishkin wrote:
> Uwe Kleine-König <u.kleine-koenig@...gutronix.de> writes:
> > On Thu, Feb 15, 2024 at 10:16:41PM +0100, Uwe Kleine-König wrote:
> >> On Wed, Jan 10, 2024 at 09:41:54AM +0100, Uwe Kleine-König wrote:
> >> > On Tue, Nov 07, 2023 at 09:28:26PM +0100, Uwe Kleine-König wrote:
> >> > > The .remove() callback for a platform driver returns an int which makes
> >> > > many driver authors wrongly assume it's possible to do error handling by
> >> > > returning an error code. However the value returned is ignored (apart
> >> > > from emitting a warning) and this typically results in resource leaks.
> >> > > 
> >> > > To improve here there is a quest to make the remove callback return
> >> > > void. In the first step of this quest all drivers are converted to
> >> > > .remove_new(), which already returns void. Eventually after all drivers
> >> > > are converted, .remove_new() will be renamed to .remove().
> >> > > 
> >> > > Trivially convert this driver from always returning zero in the remove
> >> > > callback to the void returning variant.
> >> > > 
> >> > > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
> >> > 
> >> > I didn't get any feedback to this patch and it didn't make it into next
> >> > up to now.
> >> > 
> >> > Is this still on someone's radar?
> >> 
> >> Is there a chance to get this patch into v6.9-rc1? Are you the right one
> >> to talk to about this patch? (According to MAINTAINERS you are.)
> >> 
> >> The patch was sent during the 6.7 merge window and now already missed
> >> the 6.8 one :-\
> >
> > I failed in several attempts to get feedback on this patch. You applied
> > the last two patches for this driver (that is all patches since the
> > driver was born). Would you care for that one, too? Tell me if you want
> > a resend. Note that the other 7 patches from this series are already
> > cared for, so if you're using b4 am or shazam, make use of -P7.
> 
> Apologies. This looks good to me, I will pick it up for my next
> submission to Greg unless somebody objects.

Given there are not that many patches left (~50) as of today's next, I'd
like to see this patch going in during the next merge window, that I can
finalize the (next step of the) quest around platform_driver::remove.

Is sending this patch to Greg still on your todo list?

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |

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