From: Alan Stern <stern@rowland.harvard.edu>
Date: Tue, 1 Sep 2009 15:39:59 +0000 (-0400)
Subject: usb-serial: straighten out serial_open
X-Git-Tag: v2.6.32-rc1~627^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=320348c8d5c9b591282633ddb8959b42f7fc7a1c;p=pandora-kernel.git

usb-serial: straighten out serial_open

This patch (as1291) removes a bunch of code from serial_open(), things
that were rendered unnecessary by earlier patches.  A missing spinlock
is added to protect port->port.count, which needs to be incremented
even if the open fails but not if the tty has gotten a hangup.  The
test for whether the hardware has been initialized, based on the use
count, is replaced by a more transparent test of the
ASYNCB_INITIALIZED bit in the port flags.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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