Merge branch 'master' into for-next (2290c0d0) · Commits · jan.koester / Linux

Documentation/ABI/stable/sysfs-acpi-pmprofile

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		What: /sys/firmware/acpi/pm_profile
		Date: 03-Nov-2011
		KernelVersion: v3.2
		Contact: linux-acpi@vger.kernel.org
		Description: The ACPI pm_profile sysfs interface exports the platform
		power management (and performance) requirement expectations
		as provided by BIOS. The integer value is directly passed as
		retrieved from the FADT ACPI table.
		Values: For possible values see ACPI specification:
		5.2.9 Fixed ACPI Description Table (FADT)
		Field: Preferred_PM_Profile

		Currently these values are defined by spec:
		0 Unspecified
		1 Desktop
		2 Mobile
		3 Workstation
		4 Enterprise Server
		5 SOHO Server
		6 Appliance PC
		7 Performance Server
		>7 Reserved

Documentation/ABI/testing/debugfs-ideapad

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		What: /sys/kernel/debug/ideapad/cfg
		Date: Sep 2011
		KernelVersion: 3.2
		Contact: Ike Panhc <ike.pan@canonical.com>
		Description:

		cfg shows the return value of _CFG method in VPC2004 device. It tells machine
		capability and what graphic component within the machine.


		What: /sys/kernel/debug/ideapad/status
		Date: Sep 2011
		KernelVersion: 3.2
		Contact: Ike Panhc <ike.pan@canonical.com>
		Description:

		status shows infos we can read and tells its meaning and value.

Documentation/ABI/testing/sysfs-block

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		@@ -206,3 +206,16 @@ Description:
		when a discarded area is read the discard_zeroes_data
		parameter will be set to one. Otherwise it will be 0 and
		the result of reading a discarded area is undefined.
		What: /sys/block/<disk>/alias
		Date: Aug 2011
		Contact: Nao Nishijima <nao.nishijima.xt@hitachi.com>
		Description:
		A raw device name of a disk does not always point a same disk
		each boot-up time. Therefore, users have to use persistent
		device names, which udev creates when the kernel finds a disk,
		instead of raw device name. However, kernel doesn't show those
		persistent names on its messages (e.g. dmesg).
		This file can store an alias of the disk and it would be
		appeared in kernel messages if it is set. A disk can have an
		alias which length is up to 255bytes. Users can use alphabets,
		numbers, "-" and "_" in alias name. This file is writeonce.

Documentation/ABI/testing/sysfs-bus-pci-devices-cciss

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		@@ -71,3 +71,10 @@ Description: Value of 1 indicates the controller can honor the reset_devices
		a dump device, as kdump requires resetting the device in order
		to work reliably.

		Where: /sys/bus/pci/devices/<dev>/ccissX/transport_mode
		Date: July 2011
		Kernel Version: 3.0
		Contact: iss_storagedev@hp.com
		Description: Value of "simple" indicates that the controller has been placed
		in "simple mode". Value of "performant" indicates that the
		controller has been placed in "performant mode".

Documentation/ABI/testing/sysfs-bus-pci-drivers-ehci_hcd

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		What: /sys/bus/pci/drivers/ehci_hcd/.../companion
		/sys/bus/usb/devices/usbN/../companion
		Date: January 2007
		KernelVersion: 2.6.21
		Contact: Alan Stern <stern@rowland.harvard.edu>
		Description:
		PCI-based EHCI USB controllers (i.e., high-speed USB-2.0
		controllers) are often implemented along with a set of
		"companion" full/low-speed USB-1.1 controllers. When a
		high-speed device is plugged in, the connection is routed
		to the EHCI controller; when a full- or low-speed device
		is plugged in, the connection is routed to the companion
		controller.

		Sometimes you want to force a high-speed device to connect
		at full speed, which can be accomplished by forcing the
		connection to be routed to the companion controller.
		That's what this file does. Writing a port number to the
		file causes connections on that port to be routed to the
		companion controller, and writing the negative of a port
		number returns the port to normal operation.

		For example: To force the high-speed device attached to
		port 4 on bus 2 to run at full speed:

		echo 4 >/sys/bus/usb/devices/usb2/../companion

		To return the port to high-speed operation:

		echo -4 >/sys/bus/usb/devices/usb2/../companion

		Reading the file gives the list of ports currently forced
		to the companion controller.

		Note: Some EHCI controllers do not have companions; they
		may contain an internal "transaction translator" or they
		may be attached directly to a "rate-matching hub". This
		mechanism will not work with such controllers. Also, it
		cannot be used to force a port on a high-speed hub to
		connect at full speed.

		Note: When this file was first added, it appeared in a
		different sysfs directory. The location given above is
		correct for 2.6.35 (and probably several earlier kernel
		versions as well).