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For those of you brave enough to use kernel-2.6.xx despite the random
hangs...

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Ferris McCormick (P44646, MI) <fmccor@gentoo.org>
Developer, Gentoo Linux (Sparc)

- ---------- Forwarded message ----------
Date: Thu, 21 Apr 2005 22:08:34 -0700
From: David S. Miller <davem@davemloft.net>
To: Tomas Cernaj <tcernaj@gmx.de>
Cc: debian-sparc@lists.debian.org, sparclinux@vger.kernel.org
Subject: Re: Weird Mouse Behaviour with 2.6


Ok, let's kill this bug already :-)

We were neglecting to invoke sunsu_change_speed() when first
setting up the keyboard and mouse ports. That's why things
were not working.

This should fix it and I'll push this upsteam.

[SPARC64]: In sunsu driver, make sure to fully init chip for kbd/ms

We were forgetting to call sunsu_change_speed(). The reason
that replugging in the mouse cable "fixes things" is that
causes a BREAK interrupt which in turn caused a call to
sunsu_change_speed() which would get the chip setup properly.

Signed-off-by: David S. Miller <davem@davemloft.net>

- --- a/drivers/serial/sunsu.c 2005-04-20 10:17:40.000000000 -0700
+++ b/drivers/serial/sunsu.c 2005-04-21 22:01:41.000000000 -0700
@@ -1285,6 +1285,7 @@

static int __init sunsu_kbd_ms_init(struct uart_sunsu_port *up, int channel)
{
+ int quot, baud;
#ifdef CONFIG_SERIO
struct serio *serio;
#endif
@@ -1293,10 +1294,14 @@
up->port.type = PORT_UNKNOWN;
up->port.uartclk = (SU_BASE_BAUD * 16);

- - if (up->su_type == SU_PORT_KBD)
+ if (up->su_type == SU_PORT_KBD) {
up->cflag = B1200 | CS8 | CLOCAL | CREAD;
- - else
+ baud = 1200;
+ } else {
up->cflag = B4800 | CS8 | CLOCAL | CREAD;
+ baud = 4800;
+ }
+ quot = up->port.uartclk / (16 * baud);

sunsu_autoconfig(up);
if (up->port.type == PORT_UNKNOWN)
@@ -1337,6 +1342,8 @@
}
#endif

+ sunsu_change_speed(&up->port, up->cflag, 0, quot);
+
sunsu_startup(&up->port);
return 0;
}
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