summaryrefslogtreecommitdiff
Commit message (Collapse)AuthorAgeFilesLines
* USB: add scatter-gather support to usbmonAlan Stern2009-12-112-12/+62
| | | | | | | | | | | | | This patch (as1301) adds support to usbmon for scatter-gather URBs. The text interface looks at only the first scatterlist element, since it never copies more than 32 bytes of data anyway. The binary interface copies as much data as possible up to the first non-addressable buffer. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> CC: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: EHCI: add native scatter-gather supportAlan Stern2009-12-112-5/+29
| | | | | | | | This patch (as1300) adds native scatter-gather support to ehci-hcd. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: serial: sierra driver memory reductionElina Pasheva2009-12-111-12/+77
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch deals with reducing the memory footprint for sierra driver. This optimization is aimed for embedded software customers. Some sierra modems can expose upwards of 7 USB interfaces, each possibly offering different services. In general, interfaces used for the exchange of wireless data require much higher throughput, hence require more memory (i.e. more URBs) than lower performance interfaces. URBs used for the IN direction are pre-allocated by the driver and this patch introduces a way to configure the number of IN URBs allocated on a per-interface basis. Interfaces with lower throughput requirements receive fewer URBs, thereby reducing the RAM memory consumed by the driver. NOTE1: This driver has always pre-allocated URBs for the IN direction. NOTE2: The number of URBs pre-allocated for the low-performance interfaces has already been extensively tested in previous versions of this driver. We also added the capability to log function calls by adding DEBUG flag. Please note that this flag is commented out because this is the default state for it. Signed-off-by: Elina Pasheva <epasheva@sierrawireless.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: Interface Association Descriptors added to CDC & RNDISMichal Nazarewicz2009-12-112-4/+59
| | | | | | | | | | | | | Without Interface Association Descriptor, the CDC serial and RNDIS functions did not work correctly when added to a composite gadget with other functions. This is because, it defined two interfaces and some hosts tried to treat each interface separatelly. Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: g_mass_storage: fsg_common_init() createdMichal Nazarewicz2009-12-111-162/+199
| | | | | | | | | | | | | | | | | | | | | | | | Moved code initialising fsg_common structure to fsg_common_init() function which is called from fsg_bind(). Moreover, changed reference counting mechanism: fsg_common has a reference counter which counts how many fsg_dev structures uses it. When this reaches zero fsg_common_release() is run which unregisters LUN devices and frees memory. fsg_common_init() takes pointer to fsg_common structure as an argument. If it is NULL function allocates storage otherwise uses pointed to memory (handy if fsg_common is a field of another structure or a static variable). fsg_common_release() will free storage only if free_storage_on_release is set -- it is initialised by fsg_common_init(): set if allocation was done, unset otherwise (one may overwrite it of course). Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: g_mass_storage: constant length buffers usedMichal Nazarewicz2009-12-112-20/+21
| | | | | | | | | | | | | Using version of fsg_buffhd structure with buf field being an array of characters with predefined size. Since mass storage function does not define changing buffer size on run-time it is not required for the field to be a pointer to void and allocating space dynamically. Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: g_mass_storage: parts of fsg_dev moved to fsg_common structureMichal Nazarewicz2009-12-111-168/+173
| | | | | | | | | | | | | | | In the final version, many fsg_dev structures will (be able to) refer to a single fsg_common structure and so it is required to move common data to another object which can be shared. Situation where many fsg_dev structures refer single fsg_common structure is when a single instance of MSF is used in several USB configurations. Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: g_mass_storage: testing code from f_mass_storage.c removedMichal Nazarewicz2009-12-112-572/+140
| | | | | | | | | | | | | | | | | | | | | | Removed code that was included when CONFIG_USB_FILE_STORAGE_TEST was defined. If this functionality is required one may still use the original File-backed Storage Gadget. It has been agreed that testing functionality is not required in the composite function. Also removed fsg_suspend() and fsg_resume() which were no operations. Moreover, storage_common.c has been modified in such a way that defining certain macros skips parts of the file. Those macros are: * FSG_NO_INTR_EP -- skips interrupt endpoint descriptors * FSG_NO_DEVICE_STRINGS -- skips certain strings * FSG_NO_OTG -- skips OTG descriptor Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: g_mass_storage: template f_mass_storage.c file createdMichal Nazarewicz2009-12-111-0/+3611
| | | | | | | | | | Copied file_storage.c to f_mass_storage.c which will be used as template for the Mass Storage composite Function. Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: g_file_storage: more code from file_storage.c moved to storage_common.cMichal Nazarewicz2009-12-112-117/+128
| | | | | | | | | | | | | | | | | | | Since storage_common.c no longer references mod_data object it is now possible to include it before mod_data object is defined. This makes it possible to move some defines that are used as default values of mod_data fields to be defined in storage_common.c file (where they should be set from the beginning). Also, show_ro(), show_file(), store_ro() and store_file() have been moved to storage_common.c with LUN's device's drvdata changed from pointing to fsg_dev to pointing to rw_semaphore (&fsg->filesem). Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: g_file_storage: per-LUN ro, removable and cdrom flags handling changedMichal Nazarewicz2009-12-112-6/+13
| | | | | | | | | | | | | | | | | | removable and cdrom flag has been added to the fsg_lun structure removing any references to mod_data object from storage_common.c. As of read-only flag, previously it was set if a read-only backing file was specified (which is good) and remained set even after the file has been closed (which may be considered an issue). Currently, the initial read-only flag is preserved so if it was unset each time file is opened code will try to open it read-write even if previous file was opened read-only. Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: g_file_storage: "fsg_" prefix added to some identifiersMichal Nazarewicz2009-12-112-152/+183
| | | | | | | | | | | | Prefixed some identifiers that were defined in storage_common.c file with "fsg_". Not all identifiers were prefixed but the ones that are most likely to produce conflicts when used with other USB functions. Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: g_file_storage: parts of file_storage.c moved to separate fileMichal Nazarewicz2009-12-112-567/+572
| | | | | | | | | | | | Moved parts of the file_storage.c file which do not reference fsg_dev structure to newly created storage_common.c file. dump_msg() and dump_cdb() have been changed to macros to remove fsg_dev reference. Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: Add EHCI support for MX27 and MX31 based boardsDaniel Mack2009-12-117-0/+439
| | | | | | | | | | | | | | | | | The Freescale MX27 and MX31 SoCs have a EHCI controller onboard. The controller is capable of USB on the go. This patch adds a driver to support all three of them. Users have to pass details about serial interface configuration in the platform data. The USB OTG core used here is the ARC core, so the driver should be renamed and probably be merged with ehci-fsl.c eventually. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: fix a bug in the scatter-gather libraryAlan Stern2009-12-111-1/+2
| | | | | | | | | | | | | | This patch (as1298) fixes a bug in the new scatter-gather URB facility. If an URB uses a scatterlist then it should not have the URB_NO_INTERRUPT flag set; otherwise the system won't be notified when the transfer completes. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: David Vrabel <david.vrabel@csr.com> CC: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: add a "remove hardware" sysfs attributeAlan Stern2009-12-113-2/+72
| | | | | | | | | | | | | | | | | | | | | | | | | This patch (as1297) adds a "remove" attribute to each USB device's directory in sysfs. Writing to this attribute causes the device to be deconfigured (the same as writing 0 to the "bConfigurationValue" attribute) and then tells the hub driver to disable the device's upstream port. The device remains locked during these activities so there is no possibility of it getting reconfigured in between. The port will remain disabled until after the device is unplugged. The purpose of this is to provide a means for user programs to imitate the "Safely remove hardware" applet in Windows. Some devices do expect their ports to be disabled before they are unplugged, and they provide visual feedback to users indicating when they can safely be unplugged. The security implications are minimal. Writing to the "remove" attribute is no more dangerous than writing to the "bConfigurationValue" attribute. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Cc: David Zeuthen <davidz@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: don't use a fixed DMA mapping for hub status URBsAlan Stern2009-12-111-7/+2
| | | | | | | | | | | | This patch (as1296) gets rid of the fixed DMA-buffer mapping used by the hub driver for its status URB. This URB doesn't get used much -- mainly when a device is plugged in or unplugged -- so the dynamic mapping overhead is minimal. And most systems have many fewer external hubs than root hubs, which don't need a mapped buffer anyway. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: ehci: Respect IST when scheduling new split iTDs.Sarah Sharp2009-12-112-11/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The EHCI specification says that an EHCI host controller may cache part of the isochronous schedule. The EHCI controller must advertise how much it caches in the schedule through the HCCPARAMS register isochronous scheduling threshold (IST) bits. In theory, adding new iTDs within the IST should be harmless. The HW will follow the old cached linked list and miss the new iTD. SW will notice HW missed the iTD and return 0 for the transfer length. However, Intel ICH9 chipsets (and some later chipsets) have issues when SW attempts to schedule a split transaction within the IST. All transfers will cease being sent out that port, and the drivers will see isochronous packets complete with a length of zero. Start of frames may or may not also disappear, causing the device to go into auto-suspend. This "bus stall" will continue until a control or bulk transfer is queued to a device under that roothub. Most drivers will never cause this behavior, because they use multiple URBs with multiple packets to keep the bus busy. If you limit the number of URBs to one, you may be able to hit this bug. Make sure the EHCI driver does not schedule full-speed transfers within the IST under an Intel chipset. Make sure that when we fall behind the current microframe plus IST, we schedule the new transfer at the next periodic interval after the IST. Don't change the scheduling for new transfers, since the schedule slop will always be greater than the IST. Allow high speed isochronous transfers to be scheduled within the IST, since this doesn't trigger the Intel chipset bug. Make sure that if the host caches the full frame, the EHCI driver's internal isochronous threshold (ehci->i_thresh) is set to 8 microframes + 2 microframes wiggle room. This is similar to what is done in the case where the host caches less than the full frame. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: ehci: Minor constant fix for SCHEDULE_SLOP.Sarah Sharp2009-12-111-4/+4
| | | | | | | | | | | | Change the constant SCHEDULE_SLOP to be 80 microframes, instead of 10 frames. It was always multiplied by 8 to convert frames to microframes. SCHEDULE_SLOP is only used in ehci-sched.c. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: xhci: Remove unused HCD statistics code.Sarah Sharp2009-12-111-7/+0
| | | | | | | | | | CONFIG_USB_HCD_STAT was used in an abandoned patch to track host controller throughput statistics. Since CONFIG_USB_HCD_STAT will never be defined, remove code that can never run. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: xhci: Add watchdog timer for URB cancellation.Sarah Sharp2009-12-114-16/+243
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In order to giveback a canceled URB, we must ensure that the xHCI hardware will not access the buffer in an URB. We can't modify the buffer pointers on endpoint rings without issuing and waiting for a stop endpoint command. Since URBs can be canceled in interrupt context, we can't wait on that command. The old code trusted that the host controller would respond to the command, and would giveback the URBs in the event handler. If the hardware never responds to the stop endpoint command, the URBs will never be completed, and we might hang the USB subsystem. Implement a watchdog timer that is spawned whenever a stop endpoint command is queued. If a stop endpoint command event is found on the event ring during an interrupt, we need to stop the watchdog timer with del_timer(). Since del_timer() can fail if the timer is running and waiting on the xHCI lock, we need a way to signal to the timer that everything is fine and it should exit. If we simply clear EP_HALT_PENDING, a new stop endpoint command could sneak in and set it before the watchdog timer can grab the lock. Instead we use a combination of the EP_HALT_PENDING flag and a counter for the number of pending stop endpoint commands (xhci_virt_ep->stop_cmds_pending). If we need to cancel the watchdog timer and del_timer() succeeds, we decrement the number of pending stop endpoint commands. If del_timer() fails, we leave the number of pending stop endpoint commands alone. In either case, we clear the EP_HALT_PENDING flag. The timer will decrement the number of pending stop endpoint commands once it obtains the lock. If the timer is the tail end of the last stop endpoint command (xhci_virt_ep->stop_cmds_pending == 0), and the endpoint's command is still pending (EP_HALT_PENDING is set), we assume the host is dying. The watchdog timer will set XHCI_STATE_DYING, try to halt the xHCI host, and give back all pending URBs. Various other places in the driver need to check whether the xHCI host is dying. If the interrupt handler ever notices, it should immediately stop processing events. The URB enqueue function should also return -ESHUTDOWN. The URB dequeue function should simply return the value of usb_hcd_check_unlink_urb() and the watchdog timer will take care of giving the URB back. When a device is disconnected, the xHCI hardware structures should be freed without issuing a disable slot command (since the hardware probably won't respond to it anyway). The debugging polling loop should stop polling if the host is dying. When a device is disconnected, any pending watchdog timers are killed with del_timer_sync(). It must be synchronous so that the watchdog timer doesn't attempt to access the freed endpoint structures. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: xhci: Re-purpose xhci_quiesce().Sarah Sharp2009-12-112-34/+18
| | | | | | | | | | | | | xhci_quiesce() is basically a no-op right now. It's only called if HC_IS_RUNNING() is true, and the body of the function consists of a BUG_ON if HC_IS_RUNNING() is false. For the new xHCI watchdog timer, we need a new function that clears the xHCI running bit in the command register, but doesn't wait for the halt status to show up in the status register. Re-purpose xhci_quiesce() to do that. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: xhci: Handle URB cancel, complete and resubmit race.Sarah Sharp2009-12-113-10/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the old code, there was a race condition between the stop endpoint command and the URB submission process. When the stop endpoint command is handled by the event handler, the endpoint ring is assumed to be stopped. When a stop endpoint command is queued, URB submissions are to not ring the doorbell. The old code would check the number of pending URBs to be canceled, and would not ring the doorbell if it was non-zero. However, the following race condition could occur with the old code: 1. Cancel an URB, add it to the list of URBs to be canceled, queue the stop endpoint command, and increment ep->cancels_pending to 1. 2. The URB finishes on the HW, and an event is enqueued to the event ring (at the same time as 1). 3. The stop endpoint command finishes, and the endpoint is halted. An event is queued to the event ring. 4. The event handler sees the finished URB, notices it was to be canceled, decrements ep->cancels_pending to 0, and removes it from the to be canceled list. 5. The event handler drops the lock and gives back the URB. The completion handler requeues the URB (or a different driver enqueues a new URB). This causes the endpoint's doorbell to be rung, since ep->cancels_pending == 0. The endpoint is now running. 6. A second URB is canceled, and it's added to the canceled list. Since ep->cancels_pending == 0, a new stop endpoint command is queued, and ep->cancels_pending is incremented to 1. 7. The event handler then sees the completed stop endpoint command. The handler assumes the endpoint is stopped, but it isn't. It attempts to move the dequeue pointer or change TDs to cancel the second URB, while the hardware is actively accessing the endpoint ring. To eliminate this race condition, a new endpoint state bit is introduced, EP_HALT_PENDING. When this bit is set, a stop endpoint command has been queued, and the command handler has not begun to process the URB cancellation list yet. The endpoint doorbell should not be rung when this is set. Set this when a stop endpoint command is queued, clear it when the handler for that command runs, and check if it's set before ringing a doorbell. ep->cancels_pending is eliminated, because it is no longer used. Make sure to ring the doorbell for an endpoint when the stop endpoint command handler runs, even if the canceled URB list is empty. All canceled URBs could have completed and new URBs could have been enqueued without the doorbell being rung before the command was handled. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: improved error handling in usb_port_suspend()Oliver Neukum2009-12-111-2/+7
| | | | | | | | | | | | usb: better error handling in usb_port_suspend - disable remote wakeup only if it was enabled - refuse to autosuspend if remote wakeup fails to be enabled Signed-off-by: Oliver Neukum <oliver@neukum.org> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: host: ehci: introduce omap ehci-hcd driverFelipe Balbi2009-12-112-0/+760
| | | | | | | | | | | | | | this driver has been sitting in linux-omap tree for quite some time. It adds support for omap's ehci controller. Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Vikram Pandita <vikram.pandita@ti.com> Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com> Signed-off-by: Anand Gadiyar <gadiyar@ti.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB OTG: Add generic driver for ULPI OTG transceiverDaniel Mack2009-12-115-0/+155
| | | | | | | | | | | | | | This adds a minimal generic driver for ULPI connected transceivers, using the OTG framework functions recently introduced. The driver got a table to match the ULPI chips, which currently only has one entry for NXP's ISP 1504 transceiver. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Heikki Krogerus <ext-heikki.krogerus@nokia.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB OTG: add support for ulpi connected external transceiversDaniel Mack2009-12-111-1/+67
| | | | | | | | | | | | | | | | | | | This adds support for OTG transceivers directly connected to the ULPI interface. In particular, the following details are added - a struct for low level io functions (read/write) - a priv field to be used as 'viewport' by low level access functions - an (*init) and (*shutdown) callbacks, along with static inline helpers - a (*set_vbus) callback to switch the port power on and off - a flags field for per-transceiver settings - some defines for the flags bitmask to configure platform specific details Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Heikki Krogerus <ext-heikki.krogerus@nokia.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: wusb: add wusb_phy_rate sysfs file to host controllersDavid Vrabel2009-12-115-11/+68
| | | | | | | | | Add the wusb_phy_rate sysfs file to Wireless USB host controllers. This sets the maximum PHY rate that will be used for all connected devices. Signed-off-by: David Vrabel <david.vrabel@csr.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* usb: whci-hcd: decode more QHead fields in the debug filesDavid Vrabel2009-12-111-4/+16
| | | | | | | | | Print ep number, direction and type; and current window in asl and pzl debugfs files. Signed-off-by: David Vrabel <david.vrabel@csr.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: usbtmc: minor formatting cleanupsOliver Neukum2009-12-111-2/+2
| | | | | Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: modifications for at91sam9g10Hong Xu2009-12-112-8/+8
| | | | | | | | | Modify both host and gadget USB drivers for at91sam9g10. This add a clock management equivalent to at91sam9261 on usb drivers. It also add the way of handling gadget pull-ups (like the at91sam9261). Signed-off-by: Hong Xu <hong.xu@atmel.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
* USB audio gadget: handle endpoint control requests at the function levelLaurent Pinchart2009-12-112-117/+74
| | | | | | | | | | | Now that control requests targeted at an endpoint can be handled at the function level, move the UAC-specific control request handling code from the audio gadget driver to the audio function driver. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB gadget: Handle endpoint requests at the function levelLaurent Pinchart2009-12-112-8/+47
| | | | | | | | | | | | | | | | Control requests targeted at an endpoint (that is sent to EP0 but specifying the target endpoint address in wIndex) are dispatched to the current configuration's setup callback, requiring all gadget drivers to dispatch the requests to the correct function driver. To avoid this, record which endpoints are used by each function in the composite driver SET CONFIGURATION handler and dispatch requests targeted at endpoints to the correct function. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: skeleton: Correct use of ! and &Julia Lawall2009-12-111-2/+2
| | | | | | | | | | | | | | | | | Correct priority problem in the use of ! and &. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression E; constant C; @@ - !E & C + !(E & C) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: whci-hcd: fix type and format warnings in sg codeDavid Vrabel2009-12-111-24/+2
| | | | | | | | | | | Fix type and format warning in the new sg code. Remove the very chatty debug messages that were left in by mistake and use min_t() as required (no one seems to agree on a type for buffer sizes). Reported-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David Vrabel <david.vrabel@csr.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: allow interrupt transfers to WUSB devicesDavid Vrabel2009-12-111-4/+18
| | | | | | | | | Check urb->interval on interrupt transfers and allow those with valid values (6 <= interval <= 16). Signed-off-by: David Vrabel <david.vrabel@csr.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: whci-hcd: support urbs with scatter-gather listsDavid Vrabel2009-12-114-31/+332
| | | | | | | | | | Support urbs with scatter-gather lists by trying to fit sg list elements into page lists in one or more qTDs. qTDs must end on a wMaxPacketSize boundary so if this isn't possible the urb's sg list must be copied into bounce buffers. Signed-off-by: David Vrabel <david.vrabel@csr.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: make urb scatter-gather support more genericDavid Vrabel2009-12-114-7/+14
| | | | | | | | | | | | | | | | The WHCI HCD will also support urbs with scatter-gather lists. Add a usb_bus field to indicated how many sg list elements are supported by the HCD. Use this to decide whether to pass the scatter-list to the HCD or not. Make the usb-storage driver use this new field. Signed-off-by: David Vrabel <david.vrabel@csr.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Sarah Sharp <sarah.a.sharp@linux.intel.com> Cc: Matthew Dharm <mdharm-usb@one-eyed-alien.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: Add missing static markers to ohci-pnx4008Jean Delvare2009-12-111-4/+4
| | | | | | | | | I can't see any reason why these would not be static. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: Add support for Xilinx USB host controllerJulie Zhu2009-12-114-2/+329
| | | | | | | | | | | | | | | Add bus glue driver for Xilinx USB host controller. The controller can be configured as HS only or HS/FS hybrid. The driver uses the device tree file to configure the driver according to the setting in the hardware system. This driver has been tested with usbtest using the NET2280 PCI card. Signed-off-by: Julie Zhu <julie.zhu@xilinx.com> Signed-off-by: John Linn <john.linn@xilinx.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB Storage: Make driver less chatty when it finds a new deviceMatthew Wilcox2009-12-111-5/+8
| | | | | | | | | | | | | | Use dev_dbg() instead of an unconditional printk(KERN_DEBUG). This has two benefits; one is that it identifies the USB device which the messages related to, and the other is that the messages won't be produced unless debug is turned on. Enable the debug messages when CONFIG_USB_STORAGE_DEBUG is set. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: usb-storage: Associate the name of the interface with the scsi hostMatthew Wilcox2009-12-113-1/+5
| | | | | | | | | | Instead of reporting "SCSI emulation for USB Mass Storage devices", report "usb-storage 1-4:1.0". Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: Convert a dev_info to a dev_dbgMatthew Wilcox2009-12-111-1/+1
| | | | | | | | | Knowing which configuration was chosen is a debugging aid more than it is informational. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: ehci-hub: Remove redundant ehci->debug checkJason Wessel2009-12-111-1/+1
| | | | | | | | | No need to check ehci->debug twice. Found-by: Sergei Shtylyov sshtylyov@ru.mvista.com Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* USB: serial: ftdi_sio: add space/mark parityRoland Koebler2009-12-111-6/+12
| | | | | | | | Add mark and space parity, since the device supports it. Signed-off-by: Roland Koebler <r.koebler@yahoo.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wqLinus Torvalds2009-12-104-15/+166
|\ | | | | | | | | * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: Add debugobjects support
| * workqueue: Add debugobjects supportThomas Gleixner2009-11-164-15/+166
| | | | | | | | | | | | | | | | | | | | Add debugobject support to track the life time of work_structs. While at it, remove duplicate definition of INIT_DELAYED_WORK_ON_STACK(). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Tejun Heo <tj@kernel.org>
* | Merge branch 'bugfix' of ↵Linus Torvalds2009-12-1011-79/+107
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen * 'bugfix' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen: xen: try harder to balloon up under memory pressure. Xen balloon: fix totalram_pages counting. xen: explicitly create/destroy stop_machine workqueues outside suspend/resume region. xen: improve error handling in do_suspend. xen: don't leak IRQs over suspend/resume. xen: call clock resume notifier on all CPUs xen: use iret for return from 64b kernel to 32b usermode xen: don't call dpm_resume_noirq() with interrupts disabled. xen: register runstate info for boot CPU early xen: register runstate on secondary CPUs xen: register timer interrupt with IRQF_TIMER xen: correctly restore pfn_to_mfn_list_list after resume xen: restore runstate_info even if !have_vcpu_info_placement xen: re-register runstate area earlier on resume. xen: wait up to 5 minutes for device connetion xen: improvement to wait_for_devices() xen: fix is_disconnected_device/exists_disconnected_device xen/xenbus: make DEVICE_ATTR()s static
| * | xen: try harder to balloon up under memory pressure.Ian Campbell2009-12-041-26/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently if the balloon driver is unable to increase the guest's reservation it assumes the failure was due to reaching its full allocation, gives up on the ballooning operation and records the limit it reached as the "hard limit". The driver will not try again until the target is set again (even to the same value). However it is possible that ballooning has in fact failed due to memory pressure in the host and therefore it is desirable to keep attempting to reach the target in case memory becomes available. The most likely scenario is that some guests are ballooning down while others are ballooning up and therefore there is temporary memory pressure while things stabilise. You would not expect a well behaved toolstack to ask a domain to balloon to more than its allocation nor would you expect it to deliberately over-commit memory by setting balloon targets which exceed the total host memory. This patch drops the concept of a hard limit and causes the balloon driver to retry increasing the reservation on a timer in the same manner as when decreasing the reservation. Also if we partially succeed in increasing the reservation (i.e. receive less pages than we asked for) then we may as well keep those pages rather than returning them to Xen. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Cc: Stable Kernel <stable@kernel.org>
| * | Xen balloon: fix totalram_pages counting.Gianluca Guida2009-12-041-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change totalram_pages when a single page is added/removed to the ballooned list. This avoid totalram_pages to be set erroneously to max_pfn at boot. Signed-off-by: Gianluca Guida <gianluca.guida@citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Stable Kernel <stable@kernel.org>
View Lorry Controller Status