[PATCH v2 35/37] PCI: Make /sys/bus/pci/rescan rescan root
From: Yinghai Lu <yinghai@kernel.org>
Date: 2012-03-10 07:03:36
Also in:
lkml
Subsystem:
pci subsystem, the rest · Maintainers:
Bjorn Helgaas, Linus Torvalds
It will rediscover removed pci root buses. Signed-off-by: Yinghai Lu <yinghai@kernel.org> --- 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