[PATCH 08/14] mtd: rawnand: atmel: Warn about failure to unregister mtd device

[Uwe Kleine-König]

On Mon, Jun 06, 2022 at 03:16:20PM +0200, Miquel Raynal wrote:
> Hi Uwe,
> 
> u.kleine-koenig at pengutronix.de wrote on Fri,  3 Jun 2022 23:07:52 +0200:
> 
> > The Linux device core doesn't intend remove callbacks to fail. If an
> > error code is returned the device is removed anyhow. So wail loudly if
> > the atmel specific remove callback fails and return 0 anyhow to suppress
> > the generic (and little helpful) error message by the device core.
> > 
> > Also check the remove callback to actually exist before calling it. That
> > might happen if nc->caps->ops points to atmel_nand_controller_ops.
> 
> I believe you got mislead by grepping the code because there is:
> 
> * struct nand_controller_ops atmel_nand_controller_ops
>   -> this is a NAND-wide controller ops structure
> 
> * struct atmel_nand_controller_ops atmel_<smtg>_nc_ops
>   -> this is a driver specific structure to provide different
>      registration helpers.
> 
> The latter always provide a probe and a remove implementation, so I
> believe the addition if the "if (nc->caps->ops->remove)" check is not
> relevant, unless I missed something.

You're right. I assume it's easiest for you if I send a v2 with all 14
patches? If you consider this a waste of bytes, please advise. The
patches are independant, so it would work if you pick up 1-7 + 9-14,
too. Then I'd resend a fixed patch 8 individually.

Best regards
Uwe

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