From: Peter Hurley <peter@hurleysoftware.com>
Date: Tue, 5 Mar 2013 06:09:04 +0000 (+0000)
Subject: net/irda: Fix port open counts
X-Git-Tag: v3.9-rc3~36^2~46
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a4ed2e737cb73e4405a3649f8aef7619b99fecae;p=pandora-kernel.git

net/irda: Fix port open counts

Saving the port count bump is unsafe. If the tty is hung up while
this open was blocking, the port count is zeroed.

Explicitly check if the tty was hung up while blocking, and correct
the port count if not.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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