[PATCH v2 13/20] mtd: dataflash: Warn about failure to unregister mtd device
Uwe Kleine-König
u.kleine-koenig at pengutronix.de
Wed Oct 13 07:08:35 PDT 2021
On Wed, Oct 13, 2021 at 02:44:29PM +0200, Miquel Raynal wrote:
> Hi Uwe,
>
> u.kleine-koenig at pengutronix.de wrote on Tue, 12 Oct 2021 17:39:38 +0200:
>
> > When an spi driver's remove function returns a non-zero error code
>
> Should we s/an spi/a SPI/?
My (German) knowledge about the English Grammar claims that independent
of how you spell SPI, it must be "an" because when I say it, it's
[ɛspi:aɪ] (unless you call it [spaɪ]?)
In my eyes "spi" is right, because SPI is the protocol and "spi" is the
kernel framework. But I don't feel strong here and you're already the
second who suggests something similar.
> > nothing happens apart from emitting a generic error message. Make this
> > error message more device specific and return zero instead.
> >
> > Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
> > ---
> > drivers/mtd/devices/mtd_dataflash.c | 5 ++++-
> > 1 file changed, 4 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c
> > index 9802e265fca8..2691b6b79df8 100644
> > --- a/drivers/mtd/devices/mtd_dataflash.c
> > +++ b/drivers/mtd/devices/mtd_dataflash.c
> > @@ -919,7 +919,10 @@ static int dataflash_remove(struct spi_device *spi)
> > status = mtd_device_unregister(&flash->mtd);
> > if (status == 0)
> > kfree(flash);
> > - return status;
> > + else
> > + dev_warn(&spi->dev, "Failed to unregister mtd device (%pe)\n",
> > + ERR_PTR(status));
> > + return 0;
>
> As part of a recent NAND cleanup series we ended up adding WARN_ON() [1]
> to make it very clear that if this happens, it's not expected at all (it
> was Boris' advice).
>
> I don't think there is only one good solution but perhaps its best to
> keep it sync'ed with the other drivers in MTD?
Well, if WARN_ON or dev_warn is the right thing is subjective. Your
subjective counts more as you're an MTD maintainer. Can rework
accordingly for v3.
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | https://www.pengutronix.de/ |
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