From: Kyle McMartin <kyle@shortfin.cabal.ca>
Date: Tue, 19 Feb 2008 07:34:34 +0000 (-0800)
Subject: [PARISC] pdc_console: fix bizarre panic on boot
X-Git-Tag: v2.6.25-rc6~1^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ef1afd4d79f0479960ff36bb5fe6ec6eba1ebff2;p=pandora-kernel.git

[PARISC] pdc_console: fix bizarre panic on boot

Commit 721fdf34167580ff98263c74cead8871d76936e6 introduced a subtle bug
by accidently removing the "static" from iodc_dbuf. This resulted in, what
appeared to be, a trap without *current set to a task. Probably the result of
a trap in real mode while calling firmware.

Also do other misc clean ups. Since the only input from firmware is non
blocking, share iodc_dbuf between input and output, and spinlock the
only callers.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
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