https://github.com/torvalds/linux
Revision b03214d559471359e2a85ae256686381d0672f29 authored by Michael S. Tsirkin on 24 June 2010, 04:49:06 UTC, committed by Rusty Russell on 23 June 2010, 13:19:07 UTC
virtio-pci resets the device at startup by writing to the status
register, but this does not clear the pci config space,
specifically msi enable status which affects register
layout.

This breaks things like kdump when they try to use e.g. virtio-blk.

Fix by forcing msi off at startup. Since pci.c already has
a routine to do this, we export and use it instead of duplicating code.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: linux-pci@vger.kernel.org
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: stable@kernel.org
1 parent 686d363
History
Tip revision: b03214d559471359e2a85ae256686381d0672f29 authored by Michael S. Tsirkin on 24 June 2010, 04:49:06 UTC
virtio-pci: disable msi at startup
Tip revision: b03214d
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arch
block
crypto
drivers
firmware
fs
include
init
ipc
kernel
lib
mm
net
samples
scripts
security
sound
tools
usr
virt
.gitignore -rw-r--r-- 936 bytes
.mailmap -rw-r--r-- 3.9 KB
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 91.8 KB
Kbuild -rw-r--r-- 2.4 KB
MAINTAINERS -rw-r--r-- 170.0 KB
Makefile -rw-r--r-- 52.6 KB
README -rw-r--r-- 17.0 KB
REPORTING-BUGS -rw-r--r-- 3.3 KB

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