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2006-10-04[PATCH] itmtouch: fix inverted flag to indicate touch location correctly, ↵Mark Assad
correct white space There is a bug in the current version of the itmtouch USB touchscreen driver. The if statment that checks if pressure is being applied to the touch screen is now missing a ! (not), so events are no longer being reported correctly. The original source code for this line was as follows: #define UCP(x) ((unsigned char*)(x)) #define UCOM(x,y,z) ((UCP((x)->transfer_buffer)[y]) & (z)) ... if (!UCOM(urb, 7, 0x20)) { And was cleaned to: unsigned char *data = urb->transfer_buffer; .... if (data[7] & 0x20) { (note the lack of '!') This has been tested on an LG L1510BF and an LG1510SF touch screen. Signed-off-by: Mark Assad <massad@gmail.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04Remove all inclusions of <linux/config.h>Dave Jones
kbuild explicitly includes this at build time. Signed-off-by: Dave Jones <davej@redhat.com>
2006-10-03fix file specification in commentsUwe Zeisberger
Many files include the filename at the beginning, serveral used a wrong one. Signed-off-by: Uwe Zeisberger <Uwe_Zeisberger@digi.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-10-03Still more typo fixesMatt LaPlante
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-10-03Fix several typos in drivers/Matt LaPlante
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-10-02Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (35 commits) Input: wistron - add support for Acer TravelMate 2424NWXCi Input: wistron - fix setting up special buttons Input: add KEY_BLUETOOTH and KEY_WLAN definitions Input: add new BUS_VIRTUAL bus type Input: add driver for stowaway serial keyboards Input: make input_register_handler() return error codes Input: remove cruft that was needed for transition to sysfs Input: fix input module refcounting Input: constify input core Input: libps2 - rearrange exports Input: atkbd - support Microsoft Natural Elite Pro keyboards Input: i8042 - disable MUX mode on Toshiba Equium A110 Input: i8042 - get rid of polling timer Input: send key up events at disconnect Input: constify psmouse driver Input: i8042 - add Amoi to the MUX blacklist Input: logips2pp - add sugnature 56 (Cordless MouseMan Wheel), cleanup Input: add driver for Touchwin serial touchscreens Input: add driver for Touchright serial touchscreens Input: add driver for Penmount serial touchscreens ...
2006-10-02[PATCH] namespaces: utsname: use init_utsname when appropriateSerge E. Hallyn
In some places, particularly drivers and __init code, the init utsns is the appropriate one to use. This patch replaces those with a the init_utsname helper. Changes: Removed several uses of init_utsname(). Hope I picked all the right ones in net/ipv4/ipconfig.c. These are now changed to utsname() (the per-process namespace utsname) in the previous patch (2/7) [akpm@osdl.org: CIFS fix] Signed-off-by: Serge E. Hallyn <serue@us.ibm.com> Cc: Kirill Korotaev <dev@openvz.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: Andrey Savochkin <saw@sw.ru> Cc: Serge Hallyn <serue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] usb: fixup usb so it uses struct pidEric W. Biederman
The problem with remembering a user space process by its pid is that it is possible that the process will exit, pid wrap around will occur. Converting to a struct pid avoid that problem, and paves the way for implementing a pid namespace. Also since usb is the only user of kill_proc_info_as_uid rename kill_proc_info_as_uid to kill_pid_info_as_uid and have the new version take a struct pid. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02[PATCH] const struct tty_operationsJeff Dike
As part of an SMP cleanliness pass over UML, I consted a bunch of structures in order to not have to document their locking. One of these structures was a struct tty_operations. In order to const it in UML without introducing compiler complaints, the declaration of tty_set_operations needs to be changed, and then all of its callers need to be fixed. This patch declares all struct tty_operations in the tree as const. In all cases, they are static and used only as input to tty_set_operations. As an extra check, I ran an i386 allyesconfig build which produced no extra warnings. 53 drivers are affected. I checked the history of a bunch of them, and in most cases, there have been only a handful of maintenance changes in the last six months. serial_core.c was the busiest one that I looked at. Signed-off-by: Jeff Dike <jdike@addtoit.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01[PATCH] r/o bind mount prepwork: inc_nlink() helperDave Hansen
This is mostly included for parity with dec_nlink(), where we will have some more hooks. This one should stay pretty darn straightforward for now. Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Acked-by: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01[PATCH] r/o bind mounts: unlink: monitor i_nlinkDave Hansen
When a filesystem decrements i_nlink to zero, it means that a write must be performed in order to drop the inode from the filesystem. We're shortly going to have keep filesystems from being remounted r/o between the time that this i_nlink decrement and that write occurs. So, add a little helper function to do the decrements. We'll tie into it in a bit to note when i_nlink hits zero. Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Acked-by: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01[PATCH] Vectorize aio_read/aio_write fileop methodsBadari Pulavarty
This patch vectorizes aio_read() and aio_write() methods to prepare for collapsing all aio & vectored operations into one interface - which is aio_read()/aio_write(). Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Michael Holzheu <HOLZHEU@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01[PATCH] completions: lockdep annotate on stack completionsPeter Zijlstra
All on stack DECLARE_COMPLETIONs should be replaced by: DECLARE_COMPLETION_ONSTACK Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-30[PATCH] BLOCK: Make USB storage depend on SCSI rather than selecting it [try #6]David Howells
This makes CONFIG_USB_STORAGE depend on CONFIG_SCSI rather than selecting it, as selecting it makes CONFIG_USB_STORAGE override the dependencies of SCSI, causing it to turn on even if they aren't all met. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-28USB: fix build error in ohci driverGreg Kroah-Hartman
Thanks to Andrew for the original patch for this. I need to upgrade my version of gcc to catch these things... Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB: g_file_storage: Set sense info Valid bit only when neededAlan Stern
Strictly speaking, the Valid bit in SCSI sense data is supposed to be set only when the Information field contains a valid number. This patch (as793) turns off the Valid bit when the Information field hasn't been set. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB: fix autosuspend when CONFIG_PM isn't setAlan Stern
This patch (as791b) fixes things up to avoid compiler warnings or errors when CONFIG_USB_SUSPEND or CONFIG_PM isn't set. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28OHCI: add auto-stop supportAlan Stern
This patch (as790b) adds "autostop" support to ohci-hcd: the driver will automatically stop the host controller when no devices have been connected for at least one second. This feature is useful when the USB autosuspend facility isn't available, such as when CONFIG_USB_SUSPEND hasn't been set. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28OHCI: remove existing autosuspend codeAlan Stern
The autosuspend technique used by ohci-hcd doesn't mesh well with the newer USB core autosuspend code. This patch (as789) removes ohci-hcd's autosuspend support. Now the driver will be usable, but it won't automatically go into a low-power state when no devices are connected. That's for a later patch. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB: allow both root-hub interrupts and pollingAlan Stern
Originally I didn't think any host controller driver would ever use interrupts and polling at the same time, but it turns out ohci-hcd wants to do exactly that. This patch (as788) makes it possible. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB: g_file_storage: fix "ignoring return value" warningsAlan Stern
This patch (as792) fixes "ignoring return value" warnings in file_storage.c. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB: dummy-hcd: fix "warn-unused-result" messagesAlan Stern
This patch (as758) fixes the "warn-unused-result" messages in dummy-hcd. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB: create new workqueue thread for USB autosuspendAlan Stern
This patch (as787) creates a new workqueue thread to handle delayed USB autosuspend requests. Previously the code used keventd. However it turns out that the hub driver's suspend routine calls flush_scheduled_work(), making it a poor candidate for running in keventd (the call immediately deadlocks). The solution is to use a new thread instead of keventd. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB Storage: unusual_devs.h entry for Sony Ericsson P990iJan Mate
USB Storage: this patch adds support for Sony Ericsson P990i Signed-off-by: Jan Mate <mate@fiit.stuba.sk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB: microtek usb scanner: Scsi_Cmnd conversionHenrik Kretzschmar
Converts obsolete typedef'd Scsi_Cmnd into struct scsi_cmnd. Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de> Cc: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB: fixes kerneldoc errors in usbcore-auto(susp/res)-patchHenrik Kretzschmar
Fixes kerneldoc errors on usb/core/driver.c, which occured in 2.6.18-rc6-mm2 gregkh-usb-usbcore-add-autosuspend-autoresume-infrastructure.patch Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB: add Raritan KVM USB Dongle to the HID_QUIRK_NOGET blacklistRaghavendra Biligiri
During Installation the host tries to enumerate the keyboard/mouse dongle for the Raritan KVM.At this time timeouts have been observed Adding the Raritan KVM USB dongle to the blacklist fixes this issue. Signed-off-by: Raghavendra Biligiri <Raghavendra_Biligiri@Dell.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB: asix - Add alternate device IDs for Dlink DUB-E100 Rev B1David Hollis
Add alternate device IDs for Dlink DUB-E100 Rev B1 Signed-off-by: David Hollis <dhollis@davehollis.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28usb-serial: possible irq lock inversion (PPP vs. usb/serial)Peter Zijlstra
========================================================= [ INFO: possible irq lock inversion dependency detected ]
2006-09-28ohci: Use ref-counting hotplug safe interfacesAlan Cox
We want to avoid legacy APIs like pci_find_slot(). Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB: Fix alignment of buffer passed down to ->hub_control()Mikael Pettersson
Implementations assume the buffer is at least 4 byte aligned. Signed-off-by: David S. Miller <davem@davemloft.net> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB: add SeaLevel 2106 SeaLINK support to ftdi_sioJustin Carlson
We have a couple of these USB-Serial converters around; they're slightly different from the 2104 models in that they can handle 500Kb/sec over RS422. The existing ftdi driver seems to work just fine if we add in the appropriate IDs. Patch is against 2.6.17.6, but should apply cleanly to pretty much anything recent. From: Justin Carlson <justinca@qatar.cmu.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB: New PhidgetKit 8/8/8 reset outputs after 2 secondsSean Young
New phidget interface kits (type 8/8/8) reset their outputs if they haven't received a set report for 2 seconds. Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB: another device ID for ipaqMatthias Urlichs
Add yet another device ID to the ipaq USB-serial driver. Signed-Off-By: Matthias Urlichs <matthias@urlichs.de> Cc: Ganesh Varadarajan <ganesh@veritas.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB serial ftdi_sio: Add support for Tactrix OpenPort devicesIan Abbott
This patch adds support for three OpenPort ECU data cables from Tactrix Inc. to the ftdi_sio driver's device ID table. One of the PIDs was supplied by Donour Sizemore on the ftdi-usb-sio-devel mailing list. The other two were added by myself after examining the Windows driver software. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB: Pegasus driver failing for ADMtek 8515 network devicePetko Manolov
Address http://bugzilla.kernel.org/show_bug.cgi?id=7126 Attempting to read the ethernet ID directly from the eeprom somehow confuses ADM8515. Subsequent read requests to either the eeprom or the MII fail as well. Didn't dig much deeper, though. For example ADM8513 does not experience this problem. I used the fact that at power up the device is reading its ID automatically (not true for older Pegasus based devices) and put it in the Ethernet ID registers. So now the driver uses get_registers() instead of read_eprom_word() if the device is Pegasus_II based one. Tested it with all (Pegasus and Pegasus_II) gadgets i have and everything seems ok. Cc: <jogeedaklown@yahoo.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB: unusual-devs entry for Nokia E60Alan Stern
This patch (as794) adds an unusual_devs entry for the Nokia E60. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB: Add vendor / product ID to pl2303Wesley PA4WDH
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28USB: new id for kawethOliver Neukum
this adds a new id to the kaweth driver. Please apply. Signed-Off-By: Oliver Neukum <oliver@neukum.name> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (130 commits) [ARM] 3856/1: Add clocksource for Intel IXP4xx platforms [ARM] 3855/1: Add generic time support [ARM] 3873/1: S3C24XX: Add irq_chip names [ARM] 3872/1: S3C24XX: Apply consistant tabbing to irq_chips [ARM] 3871/1: S3C24XX: Fix ordering of EINT4..23 [ARM] nommu: confirms the CR_V bit in nommu mode [ARM] nommu: abort handler fixup for !CPU_CP15_MMU cores. [ARM] 3870/1: AT91: Start removing static memory mappings [ARM] 3869/1: AT91: NAND support for DK and KB9202 boards [ARM] 3868/1: AT91 hardware header update [ARM] 3867/1: AT91 GPIO update [ARM] 3866/1: AT91 clock update [ARM] 3865/1: AT91RM9200 header updates [ARM] 3862/2: S3C2410 - add basic power management support for AML M5900 series [ARM] kthread: switch arch/arm/kernel/apm.c [ARM] Off-by-one in arch/arm/common/icst* [ARM] 3864/1: Refactore sharpsl_pm [ARM] 3863/1: Add Locomo SPI Device [ARM] 3847/2: Convert LOMOMO to use struct device for GPIOs [ARM] Use CPU_CACHE_* where possible in asm/cacheflush.h ...
2006-09-28[ARM] 3865/1: AT91RM9200 header updatesAndrew Victor
This is more preparation for adding support for the new Atmel AT91SAM9 processors. Changes include: - Replace AT91_BASE_* with AT91RM9200_BASE_* - Replace AT91_ID_* with AT91RM9200_ID_* - ROM, SRAM and UHP address definitions moved to at91rm9200.h. - The raw AT91_P[ABCD]_* definitions are now depreciated in favour of the GPIO API. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-27[PATCH] USB Storage: fix Rio Karma eject support build errorAndrew Morton
In file included from drivers/usb/storage/usb.c:180: drivers/usb/storage/unusual_devs.h:221: error: 'US_PR_KARMA' undeclared here (not in a function) drivers/usb/storage/unusual_devs.h:221: error: 'rio_karma_init' undeclared here (not in a function) Cc: Keith Bennett <keith@mcs.st-and.ac.uk> Acked-by: Bob Copeland <me@bobcopeland.com> Cc: Matthew Dharm <mdharm-usb@one-eyed-alien.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-27USB: Airprime driver improvements to allow full speed EvDO transfersAndy Gay
Adapted from an earlier patch by Greg KH <gregkh@suse.de>. That patch added multiple read urbs and larger transfer buffers to allow data transfers at full EvDO speed. This version includes additional device IDs and fixes a memory leak in the transfer buffer allocation. Some (maybe all?) of the supported devices present multiple bulk endpoints, the additional EPs can be used for control and status functions, This version allocates 3 EPs by default, that can be changed using the 'endpoints' module parameter. Tested with Sierra Wireless EM5625 and MC5720 embedded modules. Device ID (0x0c88, 0x17da) for the Kyocera Wireless KPC650/Passport was added but is not yet tested. From: Andy Gay <andy@andynet.net> Cc: Kevin Lloyd <linux@sierrawireless.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-27USB: remove OTG build warningDavid Brownell
Somewhere along the line, a variable in a USB-OTG codepath stopped being used; this removes the relevant compiler warning. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-27USB: EHCI update VIA workaroundDavid Brownell
This revamps handling of the hardware "async advance" IRQ, and its watchdog timer. Basically it dis-entangles that important timeout from the others, simplifying the associated state and code to make it more robust. This reportedly improves behavior of EHCI on some systems with VIA chips, and AFAIK won't affect non-VIA hardware. VIA systems need this code to recover from silcon bugs whereby the "async advance" IRQ isn't issued. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-27USB: force root hub resume after power lossAlan Stern
This patch(as785) forces the PM core to resume a root hub after a power loss during system sleep. If the root hub had been suspended before the system sleep then normally the PM core would not resume it afterward. Without this resume, various sorts of wakeup events (like port change events) can get lost. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-27USB: ohci_usb can oops on shutdownPete Zaitcev
When ohci-hcd is shutting down (for rmmod or PC-card removal), there is a window when the device is shut down, HC communication area (->hcca) is freed, but the core has not called "free_irq" yet. If another device triggers a shared interrupt in this window, we oops when trying to access the freed ->hcca. This patch removes the window by calling free_irq before ->hcca is freed. The patch is tested at the PC hotplug test rig at Stratus, and with rmmod by Rafael Wysocki. Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-27USB: Dealias -110 code (more complete)Pete Zaitcev
The purpose of this patch is to split off the case when a device does not reply on the lower level (which is reported by HC hardware), and a case when the device accepted the request, but does not reply at upper level. This redefinition allows to diagnose issues easier, without asking the user if the -110 happened "immediately". The usbmon splits such cases already thanks to its timestamp, but it's not always available. I adjusted all drivers which I found affected (by searching for "urb"). Out of tree drivers may suffer a little bit, but I do not expect much breakage. At worst they may print a few messages. Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-27USB: Remove unneeded void * casts in core filesTobias Klauser
The patch removes unneeded casts for the following (void *) pointers: - struct file: private - struct urb: context - struct usb_bus: hcpriv - return value of kmalloc() The patch also contains some whitespace cleanup in the relevant areas. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-27USB: u132-hcd: host controller driver for ELAN U132 adapterTony Olech
This "u132-hcd" module is one half of the "driver" for ELAN's U132 which is a USB to CardBus OHCI controller adapter. This module needs the "ftdi-elan" module in order to communicate to CardBus OHCI controller inserted into the U132 adapter. When the "ftdi-elan" module detects a supported CardBus OHCI controller in the U132 adapter it loads this "u132-hcd" module. Upon a successful device probe() the single workqueue is started up which does all the processing of commands from the USB core that implement the host controller. The workqueue maintains the urb queues and issues commands via the functions exported by the "ftdi-elan" module. Each such command will result in a callback. Note that the "ftdi-elan" module is a USB client driver. Note that this "u132-hcd" module is a (cut-down OHCI) host controller. Thus we have a topology with the parent of a host controller being a USB client! This really stresses the USB subsystem semaphore/mutex handling in the module removal. Signed-off-by: Tony Olech <tony.olech@elandigitalsystems.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>