From: Matt Carlson <mcarlson@broadcom.com>
Date: Tue, 17 Jan 2012 15:27:23 +0000 (+0000)
Subject: tg3: Fix single-vector MSI-X code
X-Git-Tag: v3.3-rc1~17^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c3b5003b628d8e373262bee42c7260d6a799c73e;p=pandora-kernel.git

tg3: Fix single-vector MSI-X code

Kdump kernels leave MSI-X interrupts (as setup by the crashed kernel)
enabled.  However, kdump only enables one CPU in the new environment,
thus causing tg3 to abort MSI-X setup.  When the driver attempts to
enable INTA or MSI interrupt modes on a kdump kernel, interrupt
delivery fails.

This patch attempts to workaround the problem by forcing the driver
to enable a single MSI-X interrupt.  In such a configuration, the
device's multivector interrupt mode must be disabled.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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