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authorIgor Mammedov <imammedo@redhat.com>2012-03-21 15:08:38 +0100
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-03-22 16:37:11 +0100
commitb9136d207f0c05c96c6b9c980fa7f7fd541a65a8 (patch)
treec5782f620475131fbd838cec21376c1a2dad7ff5 /drivers/net/xen-netfront.c
parentxen/smp: Fix bringup bug in AP code. (diff)
downloadlinux-b9136d207f0c05c96c6b9c980fa7f7fd541a65a8.tar.xz
linux-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/net/xen-netfront.c')
-rw-r--r--drivers/net/xen-netfront.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index fa679057630f..8cc0914b9f92 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -47,6 +47,7 @@
#include <xen/xenbus.h>
#include <xen/events.h>
#include <xen/page.h>
+#include <xen/platform_pci.h>
#include <xen/grant_table.h>
#include <xen/interface/io/netif.h>
@@ -1956,6 +1957,9 @@ static int __init netif_init(void)
if (xen_initial_domain())
return 0;
+ if (!xen_platform_pci_unplug)
+ return -ENODEV;
+
printk(KERN_INFO "Initialising Xen virtual ethernet driver.\n");
return xenbus_register_frontend(&netfront_driver);