Need to use it for looping registered host_bridge, and kill
pci_root_buses list.
Signed-off-by: Yinghai Lu <ying...@kernel.org>
Cc: Mauro Carvalho Chehab <mche...@redhat.com>
Cc: Doug Thompson <dougthomp...@xmission.com>
Cc: linux-e...@vger.kernel.org
Cc: x...@kernel.org
Cc: David Airlie <airl...@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Cc: "David S. Miller" <da...@davemloft.net>
Cc: sparcli...@vger.kernel.org
Cc: Tony Luck <tony.l...@intel.com>
Cc: Fenghua Yu <fenghua...@intel.com>
Cc: linux-i...@vger.kernel.org
Cc: linux-al...@sgi.com
Cc: Richard Henderson <r...@twiddle.net>
Cc: Ivan Kokshaysky <i...@jurassic.park.msu.ru>
Cc: Matt Turner <matts...@gmail.com>
Cc: linux-al...@vger.kernel.org
Cc: Russell King <li...@arm.linux.org.uk>
Cc: linux-arm-ker...@lists.infradead.org
Cc: David Howells <dhowe...@redhat.com>
Cc: Michal Simek <mon...@monstr.eu>
Cc: microblaze-ucli...@itee.uq.edu.au
Cc: Koichi Yasutake <yasutake.koi...@jp.panasonic.com>
Cc: linux-am33-l...@redhat.com
Cc: Benjamin Herrenschmidt <b...@kernel.crashing.org>
Cc: Paul Mackerras <pau...@samba.org>
Cc: linuxppc-...@lists.ozlabs.org
---
drivers/pci/pci-driver.c | 11 ++++++++++-
drivers/pci/probe.c | 1 +
include/linux/pci.h | 2 ++
3 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index acdcc3c..9fb004b 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -1278,11 +1278,20 @@ struct bus_type pci_bus_type = {
.pm = PCI_PM_OPS_PTR,
};
+struct bus_type pci_host_bridge_bus_type = {
+ .name = "pci_host_bridge",
+};
+
+static int __init pci_host_bridge_driver_init(void)
+{
+ return bus_register(&pci_host_bridge_bus_type);
+}
+postcore_initcall(pci_host_bridge_driver_init);
+
static int __init pci_driver_init(void)
{
return bus_register(&pci_bus_type);
}
-
postcore_initcall(pci_driver_init);
EXPORT_SYMBOL_GPL(pci_add_dynid);
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index ef50154..04ecf0d 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1692,6 +1692,7 @@ struct pci_bus *pci_create_root_bus(struct device
*parent, int bus,
goto err_out;
bridge->dev.parent = parent;
+ bridge->dev.bus = &pci_host_bridge_bus_type;
bridge->dev.release = pci_release_host_bridge_dev;
dev_set_name(&bridge->dev, "pci%04x:%02x", pci_domain_nr(b), bus);
error = pcibios_root_bridge_prepare(bridge);
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 056d3d6..9da06ec 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -669,6 +669,7 @@ enum pcie_bus_config_types {
extern enum pcie_bus_config_types pcie_bus_config;
+extern struct bus_type pci_host_bridge_bus_type;
extern struct bus_type pci_bus_type;
/* Do NOT directly access these two variables, unless you are arch specific pci
@@ -740,6 +741,7 @@ void pci_stop_root_bus(struct pci_bus *bus);
void pci_remove_root_bus(struct pci_bus *bus);
void pci_setup_cardbus(struct pci_bus *bus);
extern void pci_sort_breadthfirst(void);
+#define dev_is_pci_host_bridge(d) ((d)->bus == &pci_host_bridge_bus_type)
#define dev_is_pci(d) ((d)->bus == &pci_bus_type)
#define dev_is_pf(d) ((dev_is_pci(d) ? to_pci_dev(d)->is_physfn : false))
#define dev_num_vf(d) ((dev_is_pci(d) ? pci_num_vf(to_pci_dev(d)) : 0))
--
1.7.10.4
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