1 files changed, 64 insertions, 0 deletions

diff --git a/patches/jailhouse/jailhouse_0005.patch b/patches/jailhouse/jailhouse_0005.patch
new file mode 100644
index 0000000..cafff2b
--- /dev/null
+++ b/patches/jailhouse/jailhouse_0005.patch
@@ -0,0 +1,64 @@
+From d921eb56b4b0516a0bd46e9337c3deb773146faf Mon Sep 17 00:00:00 2001
+From: Jan Kiszka <jan.kiszka@siemens.com>
+Date: Tue, 21 Jun 2016 19:58:08 +0200
+Subject: [PATCH] pci: Add support for unbinding the generic PCI host
+ controller
+
+Particularly useful when working in virtual environments where the
+controller may come and go, but possibly not only there.
+
+NOTE: leaks memory, see lkml thread!
+---
+ drivers/pci/host/pci-host-common.c  | 13 +++++++++++++
+ drivers/pci/host/pci-host-generic.c |  1 +
+ include/linux/pci-ecam.h            |  1 +
+ 3 files changed, 15 insertions(+)
+
+diff --git a/drivers/pci/host/pci-host-common.c b/drivers/pci/host/pci-host-common.c
+index 44a47d4..e0da836 100644
+--- a/drivers/pci/host/pci-host-common.c
++++ b/drivers/pci/host/pci-host-common.c
+@@ -176,5 +176,18 @@ int pci_host_common_probe(struct platform_device *pdev,
+        }
+ 
+        pci_bus_add_devices(bus);
++       platform_set_drvdata(pdev, bus);
++       return 0;
++}
++
++int pci_host_common_remove(struct platform_device *pdev)
++{
++       struct pci_bus *bus = platform_get_drvdata(pdev);
++
++       pci_lock_rescan_remove();
++       pci_stop_root_bus(bus);
++       pci_remove_root_bus(bus);
++       pci_unlock_rescan_remove();
++
+        return 0;
+ }
+diff --git a/drivers/pci/host/pci-host-generic.c b/drivers/pci/host/pci-host-generic.c
+index 7d709a7..b35057e 100644
+--- a/drivers/pci/host/pci-host-generic.c
++++ b/drivers/pci/host/pci-host-generic.c
+@@ -63,5 +63,6 @@ static struct platform_driver gen_pci_driver = {
+                .suppress_bind_attrs = true,
+        },
+        .probe = gen_pci_probe,
++       .remove = pci_host_common_remove,
+ };
+ builtin_platform_driver(gen_pci_driver);
+diff --git a/include/linux/pci-ecam.h b/include/linux/pci-ecam.h
+index 809c2f1..36c9ddb 100644
+--- a/include/linux/pci-ecam.h
++++ b/include/linux/pci-ecam.h
+@@ -73,5 +73,6 @@ extern struct pci_ecam_ops xgene_v2_pcie_ecam_ops; /* APM X-Gene PCIe v2.x */
+ /* for DT-based PCI controllers that support ECAM */
+ int pci_host_common_probe(struct platform_device *pdev,
+                          struct pci_ecam_ops *ops);
++int pci_host_common_remove(struct platform_device *pdev);
+ #endif
+ #endif
+-- 
+2.1.4
+