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Re: [PATCH 4/3] g_NCR5380: Merge g_NCR5380 and g_NCR5380_mmio

From Christoph Hellwig <hch@infradead.org>
Newsgroups linux.kernel
Subject Re: [PATCH 4/3] g_NCR5380: Merge g_NCR5380 and g_NCR5380_mmio
Date 2016-09-26 02:00 +0200
Message-ID <slruV-4Hx-3@gated-at.bofh.it> (permalink)
References <sl17s-56O-7@gated-at.bofh.it> <slnrj-2dL-13@gated-at.bofh.it>
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On Sun, Sep 25, 2016 at 09:39:20PM +0200, Ondrej Zary wrote:
> Merge the PIO and MMIO code (with the help of ioport_map) in g_NCR5380 and
> delete g_NCR5380_mmio.

Awesome!  this looks great to me, but we probably should thrown
in a MODULE_ALIAS for g_NCR5380_mmio so that existing module
configurations keep working.

>  #define NCR5380_read(reg) \
> +	ioread8(((struct NCR5380_hostdata *)shost_priv(instance))->iomem + \
> +		((struct NCR5380_hostdata *)shost_priv(instance))->offset + \
> +		(reg))
>  #define NCR5380_write(reg, value) \
> -	outb(value, instance->io_port + (reg))
> +	iowrite8(value, ((struct NCR5380_hostdata *)shost_priv(instance))->iomem + \
> +		((struct NCR5380_hostdata *)shost_priv(instance))->offset + \
> +		(reg))

Can we make these #defines point to inline helper functions that avoid
the casting magic, e.g. something like

static inline void g_NCR5380_write(struct Scsi_Host *instance, u32 reg,
		u8 value)
{
	struct NCR5380_hostdata *host = shost_priv(instance);

	iowrite8(value, host->iomem, host->offset + reg);
}

#define NCR5380_write(reg, value)
	g_NCR5380_write(instance, reg, value)

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Thread

[PATCH 0/3] g_NCR5380: Modernization Ondrej Zary <linux@rainbow-software.org> - 2016-09-24 21:50 +0200
  [PATCH 3/3] g_NCR5380: Stop using scsi_module.c Ondrej Zary <linux@rainbow-software.org> - 2016-09-24 21:50 +0200
    Re: [PATCH 3/3] g_NCR5380: Stop using scsi_module.c Christoph Hellwig <hch@infradead.org> - 2016-09-26 02:00 +0200
    Re: [PATCH 3/3] g_NCR5380: Stop using scsi_module.c Finn Thain <fthain@telegraphics.com.au> - 2016-09-26 05:30 +0200
      Re: [PATCH 3/3] g_NCR5380: Stop using scsi_module.c Ondrej Zary <linux@rainbow-software.org> - 2016-09-27 15:00 +0200
        Re: [PATCH 3/3] g_NCR5380: Stop using scsi_module.c Finn Thain <fthain@telegraphics.com.au> - 2016-09-28 02:10 +0200
  [PATCH 1/3] g_NCR5380: Remove deprecated __setup Ondrej Zary <linux@rainbow-software.org> - 2016-09-24 21:50 +0200
    Re: [PATCH 1/3] g_NCR5380: Remove deprecated __setup Christoph Hellwig <hch@infradead.org> - 2016-09-26 01:50 +0200
    Re: [PATCH 1/3] g_NCR5380: Remove deprecated __setup Finn Thain <fthain@telegraphics.com.au> - 2016-09-26 02:50 +0200
  [PATCH 4/3] g_NCR5380: Merge g_NCR5380 and g_NCR5380_mmio Ondrej Zary <linux@rainbow-software.org> - 2016-09-25 21:40 +0200
    Re: [PATCH 4/3] g_NCR5380: Merge g_NCR5380 and g_NCR5380_mmio Christoph Hellwig <hch@infradead.org> - 2016-09-26 02:00 +0200
      Re: [PATCH 4/3] g_NCR5380: Merge g_NCR5380 and g_NCR5380_mmio Finn Thain <fthain@telegraphics.com.au> - 2016-09-26 02:40 +0200
        Re: [PATCH 4/3] g_NCR5380: Merge g_NCR5380 and g_NCR5380_mmio Christoph Hellwig <hch@infradead.org> - 2016-09-26 02:50 +0200
    Re: [PATCH 4/3] g_NCR5380: Merge g_NCR5380 and g_NCR5380_mmio Finn Thain <fthain@telegraphics.com.au> - 2016-09-28 02:50 +0200

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