linux-kernel - Re: [PATCH 0/2] mfd: twlx030: i2c remove callback cleanup

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Date:   Thu, 31 Mar 2022 15:17:22 +0200
From:   Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To:     Tony Lindgren <tony@...mide.com>, Lee Jones <lee.jones@...aro.org>
Cc:     linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel@...gutronix.de
Subject: Re: [PATCH 0/2] mfd: twlx030: i2c remove callback cleanup

On Thu, Jan 13, 2022 at 11:14:28AM +0100, Uwe Kleine-König wrote:
> Hello,
> 
> the remove paths of the twl4030 chip can fail and then returns an error
> code in twl_remove() early. This isn't a good thing, because the device
> will still go away with some resources not freed.
> For the twl6030 this cannot happen, and the first patch is just a small
> cleanup. For the twl4030 the situation is improved a bit: When the
> failure happens, the dummy slave devices are removed now.
> 
> Note that twl4030_exit_irq() is incomplete. The irq isn't freed and
> maybe some more cleanup is missing which might boom if an irq triggers
> after the device is removed. Not sure that twl6030_exit_irq() is better
> in this regard.
> 
> I noticed this issue because I work on making i2c_driver::remove return
> void as returning a value != 0 there is almost always an error attached
> to wrong expectations.

It's one merge window ago now that I sent these two patches and didn't
get any feedback. Did this series fell through the cracks?

Best regards
Uwe

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

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