Merge tag 'samsung-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene...

[sfrench/cifs-2.6.git] / Documentation / ABI / testing / sysfs-bus-pci

diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci
index 6615fda0abfb15d2c198f17fdeb31e1df8b84888..ee6c040364927253020a4272e24efaa132c1bff2 100644 (file)
--- a/Documentation/ABI/testing/sysfs-bus-pci
+++ b/Documentation/ABI/testing/sysfs-bus-pci
@@ -65,6 +65,16 @@ Description:
                force a rescan of all PCI buses in the system, and
                re-discover previously removed devices.
 
+What:          /sys/bus/pci/devices/.../msi_bus
+Date:          September 2014
+Contact:       Linux PCI developers <linux-pci@vger.kernel.org>
+Description:
+               Writing a zero value to this attribute disallows MSI and
+               MSI-X for any future drivers of the device.  If the device
+               is a bridge, MSI and MSI-X will be disallowed for future
+               drivers of all child devices under the bridge.  Drivers
+               must be reloaded for the new setting to take effect.
+
 What:          /sys/bus/pci/devices/.../msi_irqs/
 Date:          September, 2011
 Contact:       Neil Horman <nhorman@tuxdriver.com>