Commit Graph

43 Commits

Author SHA1 Message Date
Alan Stern 1662e3a7f0 USB: add quirk to avoid config and interface strings
Apparently the Configuration and Interface strings aren't used as
often as the Vendor, Product, and Serial strings.  In at least one
device (a Saitek Cyborg Gold 3D joystick), attempts to read the
Configuration string cause the device to stop responding to Control
requests.

This patch (as1226) adds a quirks flag, telling the kernel not to
read a device's Configuration or Interface strings, together with a
new quirk for the offending joystick.

Reported-by: Melchior FRANZ <melchior.franz@gmail.com>
Tested-by: Melchior FRANZ <melchior.franz@gmail.com>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@kernel.org>  [2.6.28 and 2.6.29, nothing earlier]
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-03-24 16:20:25 -07:00
Alan Stern 3b23dd6f8a USB: utilize the bus notifiers
This patch (as1185) makes usbcore take advantage of the bus
notifications sent out by the driver core.  Now we can create all our
device and interface attribute files before the device or interface
uevent is broadcast.

A side effect is that we no longer create the endpoint "pseudo"
devices at the same time as a device or interface is registered -- it
seems like a bad idea to try registering an endpoint before the
registration of its parent is complete.  So the routines for creating
and removing endpoint devices have been split out and renamed, and
they are called explicitly when needed.  A new bitflag is used for
keeping track of whether or not the interface's endpoint devices have
been created, since (just as with the interface attributes) they vary
with the altsetting and hence can be changed at random times.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-07 10:00:08 -08:00
Alan Stern 65bfd2967c USB: Enhance usage of pm_message_t
This patch (as1177) modifies the USB core suspend and resume
routines.  The resume functions now will take a pm_message_t argument,
so they will know what sort of resume is occurring.  The new argument
is also passed to the port suspend/resume and bus suspend/resume
routines (although they don't use it for anything but debugging).

In addition, special pm_message_t values are used for user-initiated,
device-initiated (i.e., remote wakeup), and automatic suspend/resume.
By testing these values, drivers can tell whether or not a particular
suspend was an autosuspend.  Unfortunately, they can't do the same for
resumes -- not until the pm_message_t argument is also passed to the
drivers' resume methods.  That will require a bigger change.

IMO, the whole Power Management framework should have been set up this
way in the first place.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-07 10:00:03 -08:00
Alan Stern 92b0da1571 USB: straighten out inline code in sysfs.c
This patch (as1156) straightens out some code in usbcore.  The
usb_create_intf_ep_files() and usb_remove_intf_ep_files() routines
don't need to be separate inlines; they should be moved bodily into
the places where they get used.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-07 09:59:50 -08:00
Alan Stern 352d026338 USB: don't register endpoints for interfaces that are going away
This patch (as1155) fixes a bug in usbcore.  When interfaces are
deleted, either because the device was disconnected or because of a
configuration change, the extra attribute files and child endpoint
devices may get left behind.  This is because the core removes them
before calling device_del().  But during device_del(), after the
driver is unbound the core will reinstall altsetting 0 and recreate
those extra attributes and children.

The patch prevents this by adding a flag to record when the interface
is in the midst of being unregistered.  When the flag is set, the
attribute files and child devices will not be created.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@kernel.org> [2.6.27, 2.6.26, 2.6.25]
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-11-13 14:45:00 -08:00
Sarah Sharp 49e7cc84a8 USB: Export if an interface driver supports autosuspend.
Create a new sysfs file per interface named supports_autosuspend.  This
file returns true if an interface driver's .supports_autosuspend flag is
set.  It also returns true if the interface is unclaimed (since the USB
core will autosuspend a device if an interface is not claimed).

This new sysfs file will be useful for user space scripts to test whether
a USB device correctly auto-suspends.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-10-17 14:41:03 -07:00
Alan Stern 217a9081d8 USB: add all configs to the "descriptors" attribute
This patch (as1094) changes the output of the "descriptors" binary
attribute.  Now it will contain the device descriptor followed by all
the configuration descriptors, not just the descriptor for the current
config.

Userspace libraries want to have access to the kernel's cached
descriptor information, so they can learn about device characteristics
without having to wake up suspended devices.  So far the only user of
this attribute is the new libusb-1.0 library; thus changing its
contents shouldn't cause any problems.

This should be considered for 2.6.26, if for no other reason than to
minimize the range of releases in which the attribute contains only the
current config descriptor.

Also, it doesn't hurt that the patch removes the device locking --
which was formerly needed in order to know for certain which config was
indeed current.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-05-29 13:59:03 -07:00
Alan Stern 2e5f10e4f0 USB: create attributes before sending uevent
This patch (as1087d) fixes a long-standing problem in usbcore: Device,
interface, and endpoint attributes aren't added until _after_ the
creation uevent has already been broadcast.

Unfortunately there are a few attributes which cannot be created that
early.  The "descriptors" attribute is binary and so must be created
separately.  The power-management attributes can't be created until
the dev/power/ group exists.  And the interface string can vary from
one altsetting to another, so it has to be created dynamically.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-05-14 10:00:26 -07:00
Alan Stern feccc30d90 USB: remove CONFIG_USB_PERSIST setting
This patch (as1047) removes the USB_PERSIST Kconfig option, enabling
it permanently.  It also prevents the power/persist attribute from
being created for hub devices; there's no point in having it since
USB-PERSIST is always turned on for hubs.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-24 21:16:32 -07:00
Greg Kroah-Hartman 2c044a4803 USB: fix codingstyle issues in drivers/usb/core/*.c
Fixes a number of coding style issues in the remaining .c files in
drivers/usb/core/

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-02-01 14:35:08 -08:00
Sarah Sharp 1512300689 USB: Export suspend statistics
This patch exports two statistics to userspace:
/sys/bus/usb/device/.../power/connected_duration
/sys/bus/usb/device/.../power/active_duration

connected_duration is the total time (in msec) that the device has
been connected.  active_duration is the total time the device has not
been suspended.  With these two statistics, tools like PowerTOP can
calculate the percentage time that a device is active, i.e. not
suspended or auto-suspended.

Users can also use the active_duration to check if a device is actually
autosuspended.  Currently, they can set power/level to auto and
power/autosuspend to a positive timeout, but there's no way to know from
userspace if a device was actually autosuspended without looking at the
dmesg output.  These statistics will be useful in creating an automated
userspace script to test autosuspend for USB devices.

Signed-off-by: Sarah Sharp <sarah.a.sharp@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-02-01 14:35:00 -08:00
Alan Stern 7e61559f61 USB: keep track of whether interface sysfs files exist
This patch (as1009) solves the problem of multiple registrations for
USB sysfs files in a more satisfying way than the existing code.  It
simply adds a flag to keep track of whether or not the files have been
created; that way the files can be created or removed as needed.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
2007-11-28 13:58:35 -08:00
Sarah Sharp 4d59d8a113 USB: Export URB statistics for powertop
powertop currently tracks interrupts generated by uhci, ehci, and ohci,
but it has no way of telling which USB device to blame USB bus activity on.
This patch exports the number of URBs that are submitted for a given device.
Cat the file 'urbnum' in /sys/bus/usb/devices/.../

Signed-off-by: Sarah Sharp <sarah.a.sharp@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12 14:55:30 -07:00
Inaky Perez-Gonzalez e03f2e8a53 usb: hook up device authorization to sysfs
Makes it possible to control the authorization of USB devices through
sysfs's /sys/usb/devices/*/authorize.

Update: per Adrian Bunk's suggestion, make dev_attr_authorized_default static

Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12 14:55:08 -07:00
Alan Stern 69d42a78f9 USB: add "descriptors" binary sysfs attribute
This patch (as934) adds a new readonly binary sysfs attribute file
called "descriptors" for each USB device.  The attribute contains the
device descriptor followed by the raw descriptor entry (config plug
subsidiary descriptors) for the current configuration.

Having this information available in fixed-format binary makes life a
lot easier for user programs by avoiding the need to open, read, and
parse multiple sysfs text files.

The information in this attribute file is much like that in usbfs's
device file, but there are some significant differences:

	The 2-byte fields in the device descriptor are left in
	little-endian byte order, as they appear on the bus and
	in the kernel.

	Only one raw descriptor set is presented, that of the
	current configuration.

	Opening this file will not cause a suspended device to be
	autoresumed.

The last item in particular should be a big selling point for libusb,
which currently forces all USB devices to be resumed as it scans the
device tree.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Dave Mielke <dave@mielke.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-19 17:46:04 -07:00
Craig W. Nadler 165fe97ed6 USB: add IAD support to usbfs and sysfs
USB_IAD: Adds support for USB Interface Association Descriptors.

This patch adds support to the USB host stack for parsing, storing, and
displaying Interface Association Descriptors. In /proc/bus/usb/devices
lines starting with A: show the fields in an IAD. In sysfs if an
interface on a USB device is referenced by an IAD the following files
will be added to the sysfs directory for that interface:
iad_bFirstInterface, iad_bInterfaceCount, iad_bFunctionClass, and
iad_bFunctionSubClass, iad_bFunctionProtocol

Signed-off-by: Craig W. Nadler <craig@nadler.us>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-12 16:34:40 -07:00
Alan Stern b41a60eca8 USB: add power/persist device attribute
This patch (as920) adds an extra level of protection to the
USB-Persist facility.  Now it will apply by default only to hubs; for
all other devices the user must enable it explicitly by setting the
power/persist device attribute.

The disconnect_all_children() routine in hub.c has been removed and
its code placed inline.  This is the way it was originally as part of
hub_pre_reset(); the revised usage in hub_reset_resume() is
sufficiently different that the code can no longer be shared.
Likewise, mark_children_for_reset() is now inline as part of
hub_reset_resume().  The end result looks much cleaner than before.

The sysfs interface is updated to add the new attribute file, and
there are corresponding documentation updates.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-12 16:34:30 -07:00
Alan Stern dd865571d7 USB: handle errors in power/level attribute
This patch (as906) improves the error handling for the USB power/level
attribute file.  If an error occurs, the original power-level settings
will be restored.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-22 23:45:50 -07:00
Alan Stern 83f7d958ea USB: add "busnum" attribute for USB devices
This patch (as903) adds a "busnum" sysfs attribute for USB devices.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 13:28:42 -07:00
Alan Stern 2add5229d7 USB: add power/level sysfs attribute
This patch (as874) adds another piece to the user-visible part of the
USB autosuspend interface.  The new power/level sysfs attribute allows
users to force the device on (with autosuspend off), force the device
to sleep (with autoresume off), or return to normal automatic operation.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 13:28:37 -07:00
Alan Stern eaafbc3a8a USB: Allow autosuspend delay to equal 0
This patch (as867) adds an entry for the new power/autosuspend
attribute in Documentation/ABI/testing, and it changes the behavior of
the delay value.  Now a delay of 0 means to autosuspend as soon as
possible, and negative values will prevent autosuspend.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 13:28:35 -07:00
Alan Stern 19c262391c USB: export autosuspend delay in sysfs
This patch (as861) adds sysfs attributes to expose the autosuspend
delay value for each USB device.  If the user changes the delay from 0
(no autosuspend) to a positive value, an autosuspend is attempted.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-23 15:03:47 -08:00
Alan Stern aa084f3efe USB: minor cleanups for sysfs.c
This patch (as858) makes some minor cleanups to sysfs.c in usbcore.
Unnecessary tests are removed and a few temp variables are added.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-23 15:03:46 -08:00
Oliver Neukum 7ceec1f1d2 USB: add a blacklist for devices that can't handle some things we throw at them.
This adds a blacklist to the USB core to handle some autosuspend and
string issues that devices have.

Originally written by Oliver, but hacked up a lot by Greg.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-23 15:03:46 -08:00
Alan Stern 3f141e2aed USB: unconfigure devices which have config 0
Some USB devices do have a configuration 0, in contravention of the
USB spec.  Normally 0 is supposed to indicate that a device is
unconfigured.

While we can't change what the device is doing, we can change usbcore.
This patch (as852) allows usb_set_configuration() to accept a config
value of -1 as indicating that the device should be unconfigured.  The
request actually sent to the device will still contain 0 as the value.
But even if the device does have a configuration 0, dev->actconfig
will be set to NULL and dev->state will be set to USB_STATE_ADDRESS.

Without some sort of special-case handling like this, there is no way
to unconfigure these non-compliant devices.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-16 15:32:21 -08:00
Oliver Neukum 9251644ab3 usbcore: trivial whitespace fixes
This patch (as844) makes some trivial whitespace fixes to a few files
in usbcore.  Oliver did most of the work and Alan added some tidying up.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-07 15:44:40 -08:00
Greg Kroah-Hartman 1b21d5e166 USB: fix __must_check warnings in drivers/usb/core/
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-27 11:58:57 -07:00
Alan Stern b6eb2d84d2 usbcore: add configuration_string to attribute group
This patch (as737b) does a very small cleanup of core/sysfs.c by adding
the configuration_string attribute file to the existing attribute group
instead of treating it separately.  It doesn't need this separate
treatment because unlike the other device string attributes, it changes
along with the active configuration.

The patch also fixes a simple typo (which, oddly enough, doesn't seem to
bother the compiler).

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-27 11:58:49 -07:00
Jörn Engel 6ab3d5624e Remove obsolete #include <linux/config.h>
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-30 19:25:36 +02:00
Greg Kroah-Hartman 36679ea598 [PATCH] USB: make usb_create_ep_files take a struct device
Instead of a kobject, will make things easier in the future (don't know
what I was thinking when I did this originally...)

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-21 15:04:19 -07:00
Greg Kroah-Hartman 84412f6291 [PATCH] USB: move the endpoint specific sysfs code to it's own file
This makes it easier to modify in the future without touching anything else.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-21 15:04:18 -07:00
Greg Kroah-Hartman 654f31189e [PATCH] USB: move CONFIG_USB_DEBUG checks into the Makefile
This lets us remove a lot of code in the drivers that were all checking
the same thing.  It also found some bugs in a few of the drivers, which
has been fixed up.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-17 11:29:55 -08:00
Alan Stern 4f62efe67f [PATCH] usbcore: Fix handling of sysfs strings and other attributes
This patch (as592) makes a few small improvements to the way device
strings are handled, and it fixes some bugs in a couple of other sysfs
attribute routines.  (Look at show_configuration_string() to see what I
mean.)

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28 16:47:51 -07:00
Alan Stern b724ae7796 [PATCH] usbcore: Wrap lines before column 80
I can't stand text lines that wrap-around in my 80-column windows.  This
patch (as589) makes cosmetic changes to a couple of source files.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28 16:47:51 -07:00
Alan Stern be69e5b190 [PATCH] usbcore: Improve endpoint sysfs file handling
This revised patch (as587b) improves the implementation of USB endpoint
sysfs files.  Instead of storing a whole bunch of attributes for every
single endpoint, each endpoint now gets its own kobject and they can
share a static list of attributes.  The number of extra fields added to
struct usb_host_endpoint has been reduced from 4 to 1.

The bEndpointAddress field is retained even though it is redundant (it
repeats the same information as the attributes' directory name).  The
code avoids calling kobject_register, to prevent generating unwanted
hotplug events.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28 16:47:50 -07:00
Greg Kroah-Hartman 7521803dcc [PATCH] USB: always export interface information for modalias
This fixes a problem with some cdc acm devices that were not getting
automatically loaded as the module alias was not being reported
properly.

This check was for back in the days when we only reported hotplug events
for the main usb device, not the interfaces.  We should always give the
interface information for MODALIAS/modalias as it can be needed.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28 16:47:48 -07:00
Greg Kroah-Hartman 094f164957 [PATCH] USB: add endpoint information to sysfs
This patch adds endpoint information for both devices and interfaces to
sysfs.  Previously it was only possible to get the endpoint information
from usbfs, and never possible to get any information on endpoint 0.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

 drivers/usb/core/sysfs.c |  195 ++++++++++++++++++++++++++++++++++++++++++++++-
 include/linux/usb.h      |    4
 2 files changed, 197 insertions(+), 2 deletions(-)
2005-10-28 16:47:37 -07:00
Greg Kroah-Hartman cf5910bbae [PATCH] USB: add bMaxPacketSize0 attribute to sysfs
For some reason this was not there...

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-07-12 11:52:54 -07:00
Greg Kroah-Hartman 4893e9d1cf [PATCH] USB: fix show_modalias() function due to attribute change
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 15:27:35 -07:00
Yani Ioannou 10523b3b82 [PATCH] Driver Core: drivers/s390/net/qeth_sys.c - drivers/usb/gadget/pxa2xx_udc.c: update device attribute callbacks
Signed-off-by: Yani Ioannou <yani.ioannou@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-20 15:15:35 -07:00
Paulo Marques 77ddecc3c0 [PATCH] USB: make MODALIAS code a bit smaller devices
This patch makes the code to provide modalias in sysfs for usb devices
56 bytes smaller in i386, while making it clear that the first part of
the modalias string is the same no matter what the device class is.

Signed-Off-By: Paulo Marques <pmarques@grupopie.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-03 00:04:29 -07:00
Greg KH 360b52b089 [PATCH] USB: add modalias sysfs file for usb devices
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-05-16 21:44:26 -07:00
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00