linux-serial.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Manuel Lauss <manuel.lauss@googlemail.com>
To: Andrew Morton <akpm@linux-foundation.org>,
	Ralf Baechle <ralf@linux-mips.org>
Cc: Linux-MIPS <linux-mips@linux-mips.org>,
	linux-serial@vger.kernel.org,
	Manuel Lauss <manuel.lauss@gmail.com>
Subject: [PATCH 1/2] serial: 8250: reduce Alchemy serial port space size
Date: Wed, 28 Oct 2009 20:09:13 +0100	[thread overview]
Message-ID: <1256756954-29211-1-git-send-email-manuel.lauss@gmail.com> (raw)

This patch limits the amount of address space claimed for Alchemy serial
ports to 0x1000.  On the Au1300, ports are only 0x1000 apart, and the
registers only extend to 0x110 at most on all supported alchemy models.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
---
I'm not sure who to send this patch to; I added Ralf Baechle because
he always takes my alchemy patches, 8250 is unmaintained and this
patch is required for adding support for a new alchemy model (this patch
gets me a working serial console on the DB1300).

 drivers/serial/8250.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index b1ae774..2ff81eb 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -2429,7 +2429,7 @@ serial8250_pm(struct uart_port *port, unsigned int state,
 static unsigned int serial8250_port_size(struct uart_8250_port *pt)
 {
 	if (pt->port.iotype == UPIO_AU)
-		return 0x100000;
+		return 0x1000;
 #ifdef CONFIG_ARCH_OMAP
 	if (is_omap_port(pt))
 		return 0x16 << pt->port.regshift;
-- 
1.6.5


             reply	other threads:[~2009-10-28 19:09 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-10-28 19:09 Manuel Lauss [this message]
2009-10-28 19:09 ` [PATCH 2/2] MIPS: Alchemy: UARTs are 16550A Manuel Lauss
2009-10-28 19:24   ` Andrew Morton
2009-10-28 19:27     ` Manuel Lauss
2009-10-28 19:52       ` Andrew Morton
2009-10-28 20:11         ` Manuel Lauss
2009-10-28 22:34         ` Ralf Baechle
2009-10-28 19:36   ` Sergei Shtylyov
2009-10-28 19:55     ` Manuel Lauss

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1256756954-29211-1-git-send-email-manuel.lauss@gmail.com \
    --to=manuel.lauss@googlemail.com \
    --cc=akpm@linux-foundation.org \
    --cc=linux-mips@linux-mips.org \
    --cc=linux-serial@vger.kernel.org \
    --cc=manuel.lauss@gmail.com \
    --cc=ralf@linux-mips.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).