linux-kernel - Re: RFC: drop ISA support in the synlink tty driver?

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Date:   Tue, 12 Feb 2019 09:25:17 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Jiri Slaby <jslaby@...e.cz>
Cc:     Christoph Hellwig <hch@....de>, linux-kernel@...r.kernel.org,
        linux-serial@...r.kernel.org
Subject: Re: RFC: drop ISA support in the synlink tty driver?

On Tue, Feb 12, 2019 at 09:08:41AM +0100, Jiri Slaby wrote:
> On 12. 02. 19, 8:51, Greg Kroah-Hartman wrote:
> > On Mon, Feb 11, 2019 at 02:25:33PM +0100, Christoph Hellwig wrote:
> >> Hi Greg and Jiri,
> >>
> >> I've been working hard to get rid of the remaining callers the pass a
> >> NULL struct device to the DMA mapping functions and am almost done.
> >>
> >> The only non-trivial driver is the synclink driver, which has legacy
> >> early 90s style ISA support that doesn't use the device model at all.
> >>
> >> In theory we could convert it to an isa_driver, but without testing
> >> that seems rather dangerous.  So for now I would suggest that we
> >> remove the ISA support in this driver - if anyone cares enough we
> >> can resurrect it from the git history and convert it to use the driver
> >> model.
> > 
> > No objection from me at all, I'll go queue this up now, thanks.
> 
> Agreed, but I would kill also the MGSL_BUS_TYPE_ISA macro proper.

It's just a #define, in a uapi file, so we should probably leave it as
userspace programs _might_ depend on it.  I have no idea why, but oh
well...

thanks,

greg k-h