Re: [PATCH] ide: falconide: convert to platform driver

[Michael Schmitz <schmitzmic@gmail.com>]

Hi Geert,

thanks for the review!

On Tue, Nov 5, 2019 at 9:11 PM Geert Uytterhoeven <geert@linux-m68k.org> wrote:
>
> Hi Michael,
>
> On Tue, Nov 5, 2019 at 7:38 AM Michael Schmitz <schmitzmic@gmail.com> wrote:
> > With the introduction of a platform device for the Atari Falcon IDE
> > interface, the old Falcon IDE driver no longer loads (resource already
> > claimed by the platform device).
> >
> > Convert falconide driver to use the same platform device that is used
> > by pata_falcon also.
> >
> > Tested (as built-in driver) on my Atari Falcon.
> >
> > Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>
> > CC: Geert Uytterhoeven <geert@linux-m68k.org>
>
> Thanks for your patch!
>
> > --- a/drivers/ide/falconide.c
> > +++ b/drivers/ide/falconide.c
> > @@ -15,6 +15,7 @@
> >  #include <linux/blkdev.h>
> >  #include <linux/ide.h>
> >  #include <linux/init.h>
> > +#include <linux/platform_device.h>
> >
> >  #include <asm/setup.h>
> >  #include <asm/atarihw.h>
> > @@ -23,6 +24,7 @@
> >  #include <asm/ide.h>
> >
> >  #define DRV_NAME "falconide"
> > +#define DRV_VERSION "0.1.0"
>
> Does anyone care about that version?

Not likely.

> Will it ever be updated?

You ask me? You're still listed as driver author!

I'll remove the version.

>
> > @@ -169,10 +177,21 @@ static int __init falconide_init(void)

Should I remove the __init here? Doesn't hurt in the built-in use
case, what about use as a module?

> >  err_free:
> >         ide_host_free(host);
> >  err:
> > -       release_mem_region(ATA_HD_BASE, 0x40);
> > +       release_mem_region(res->start, resource_size(res));
> >         return rc;
> >  }
> >
> > -module_init(falconide_init);
> > +static struct platform_driver ide_falcon_driver = {
> > +       .driver   = {
> > +               .name   = "atari-falcon-ide",
> > +       },
> > +};
>
> Missing .remove() callback.

Can't easily test driver remove, but I can certainly add a callback for that.

ide_unregister does the Right Thing (i.e. leaves the ST-DMA interrupt
registered) so no reason why it shouldn't work.

>
> > +
> > +module_platform_driver_probe(ide_falcon_driver, falconide_init);
> > +
> >
> > +MODULE_AUTHOR("Geert Uytterhoeven");
> > +MODULE_DESCRIPTION("low-level driver for Atari Falcon IDE");
> >  MODULE_LICENSE("GPL");
> > +MODULE_ALIAS("platform:atari-falcon-ide");
> > +MODULE_VERSION(DRV_VERSION);
>
> I'd drop the MODULE_VERSION().

Done.

Shall I merge this one with part one of the old series so there's no
chance of a bisection going wrong?

Cheers,

    Michael


>
> Gr{oetje,eeting}s,
>
>                         Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds