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Re: Preliminary patch for ip32 ttyS* device

To: "Maciej W. Rozycki" <>
Subject: Re: Preliminary patch for ip32 ttyS* device
From: Martin Michlmayr <>
Date: Sat, 17 Nov 2007 20:35:29 +0100
Cc: Giuseppe Sacco <>, mips kernel list <>
In-reply-to: <>
Original-recipient: rfc822;
References: <> <> <1194446585.5849.21.camel@scarafaggio> <>
User-agent: Mutt/1.5.16 (2007-06-11)
* Maciej W. Rozycki <> [2007-11-07 17:21]:
> > If mapbase isn't mandatory, the second part of my patch is
> > probably right and fixes a bug.
> You ought to use mapbase and ioremap() with new code as you are not
> allowed to use readb()/writeb()/etc. on addresses obtained otherwise
> than by calling ioremap().  The use of request_mem_region(), etc. is
> not strictly mandatory, but it is nice to have.  Many serial drivers
> use these functions, so I cannot see a reason why it would be a
> hassle for ip32.

Can someone propose a patch?  It's quote unfortuntely that serial on
IP32 is still broken (including 2.6.23).
Martin Michlmayr

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