From: Jason Wessel <jason.wessel@windriver.com>
Date: Sun, 12 Aug 2012 12:16:43 +0000 (-0500)
Subject: pmac_zilog,kdb: Fix console poll hook to return instead of loop
X-Git-Tag: v3.2.29~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4422e6fe13eff3fc4337dedc76f6830e1a3b4e1a;p=pandora-kernel.git

pmac_zilog,kdb: Fix console poll hook to return instead of loop

commit 38f8eefccf3a23c4058a570fa2938a4f553cf8e0 upstream.

kdb <-> kgdb transitioning does not work properly with this UART
driver because the get character routine loops indefinitely as opposed
to returning NO_POLL_CHAR per the expectation of the KDB I/O driver
API.

The symptom is a kernel hang when trying to switch debug modes.

Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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