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| author |   Igor Mammedov <imammedo@redhat.com> | 2012-03-21 15:08:38 +0100 |
|---|---|---|
| committer |   Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-03-22 11:37:11 -0400 |
| commit | b9136d207f0c05c96c6b9c980fa7f7fd541a65a8 (patch) | |
| tree | c5782f620475131fbd838cec21376c1a2dad7ff5 /drivers/block | |
| parent | xen/smp: Fix bringup bug in AP code. (diff) | |
| download | linux-dev-b9136d207f0c05c96c6b9c980fa7f7fd541a65a8.tar.xz linux-dev-b9136d207f0c05c96c6b9c980fa7f7fd541a65a8.zip | |
xen: initialize platform-pci even if xen_emul_unplug=never
When xen_emul_unplug=never is specified on kernel command line
reading files from /sys/hypervisor is broken (returns -EBUSY).
It is caused by xen_bus dependency on platform-pci and
platform-pci isn't initialized when xen_emul_unplug=never is
specified.
Fix it by allowing platform-pci to ignore xen_emul_unplug=never,
and do not intialize xen_[blk|net]front instead.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/xen-blkfront.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 9fd3ee203b1e..4276ab035e00 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -1452,6 +1452,9 @@ static int __init xlblk_init(void) if (!xen_domain()) return -ENODEV; + if (!xen_platform_pci_unplug) + return -ENODEV; + if (register_blkdev(XENVBD_MAJOR, DEV_NAME)) { printk(KERN_WARNING "xen_blk: can't get major %d with name %s\n", XENVBD_MAJOR, DEV_NAME); |