From: Nithin Nayak Sujir <nsujir@broadcom.com>
Date: Mon, 14 Jan 2013 17:10:59 +0000 (+0000)
Subject: tg3: Avoid null pointer dereference in tg3_interrupt in netconsole mode
X-Git-Tag: v3.2.39~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ac7551bedf950ef638df23badb0df0a7ca8045fd;p=pandora-kernel.git

tg3: Avoid null pointer dereference in tg3_interrupt in netconsole mode

[ Upstream commit 9c13cb8bb477a83b9a3c9e5a5478a4e21294a760 ]

When netconsole is enabled, logging messages generated during tg3_open
can result in a null pointer dereference for the uninitialized tg3
status block. Use the irq_sync flag to disable polling in the early
stages. irq_sync is cleared when the driver is enabling interrupts after
all initialization is completed.

Signed-off-by: Nithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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