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authorAlex Chiang <achiang@hp.com>2009-03-20 21:56:31 +0100
committerJesse Barnes <jbarnes@virtuousgeek.org>2009-03-20 22:57:58 +0100
commit705b1aaa823e800490f157cd9366ad8cff385f5f (patch)
tree634ea8ba227a305074938f49c110fea8e68e8bb3 /Documentation/ABI/testing/sysfs-bus-pci
parentPCI: Introduce pci_rescan_bus() (diff)
downloadlinux-705b1aaa823e800490f157cd9366ad8cff385f5f.tar.xz
linux-705b1aaa823e800490f157cd9366ad8cff385f5f.zip
PCI: Introduce /sys/bus/pci/rescan
This interface allows the user to force a rescan of all PCI buses in system, and rediscover devices that have been removed earlier. pci_bus_attrs implementation from Trent Piepho. Thanks to Vegard Nossum for discovering locking issues with the sysfs interface. Cc: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-bus-pci')
-rw-r--r--Documentation/ABI/testing/sysfs-bus-pci9
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci
index d175a2a5fac2..e6ad047cb3c2 100644
--- a/Documentation/ABI/testing/sysfs-bus-pci
+++ b/Documentation/ABI/testing/sysfs-bus-pci
@@ -57,6 +57,15 @@ Description:
match the driver to the device. For example:
# echo "8086 10f5" > /sys/bus/pci/drivers/foo/remove_id
+What: /sys/bus/pci/rescan
+Date: January 2009
+Contact: Linux PCI developers <linux-pci@vger.kernel.org>
+Description:
+ Writing a non-zero value to this attribute will
+ force a rescan of all PCI buses in the system, and
+ re-discover previously removed devices.
+ Depends on CONFIG_HOTPLUG.
+
What: /sys/bus/pci/devices/.../vpd
Date: February 2008
Contact: Ben Hutchings <bhutchings@solarflare.com>