[PATCH v2 35/37] PCI: Make /sys/bus/pci/rescan rescan root

[Yinghai Lu]

It will rediscover removed pci root buses.

Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx>
---
 drivers/pci/pci-sysfs.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 4d122cb..fc0a7de 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -284,6 +284,7 @@ msi_bus_store(struct device *dev, struct device_attribute *attr,
 
 #ifdef CONFIG_HOTPLUG
 static DEFINE_MUTEX(pci_remove_rescan_mutex);
+void __weak arch_pci_root_rescan(void) { }
 static ssize_t bus_rescan_store(struct bus_type *bus, const char *buf,
 				size_t count)
 {
@@ -295,6 +296,7 @@ static ssize_t bus_rescan_store(struct bus_type *bus, const char *buf,
 
 	if (val) {
 		mutex_lock(&pci_remove_rescan_mutex);
+		arch_pci_root_rescan();
 		while ((b = pci_find_next_bus(b)) != NULL)
 			pci_rescan_bus(b);
 		mutex_unlock(&pci_remove_rescan_mutex);
-- 
1.7.7

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/