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path: root/drivers/usb/host
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2009-06-15USB: xhci: fix lots of compiler warnings.Greg Kroah-Hartman
Turns out someone never built this code on a 64bit platform. Someone owes me a beer... Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: xhci: use xhci_handle_event instead of handle_eventStephen Rothwell
The former is way to generic for a global symbol. Fixes this build error: drivers/usb/built-in.o: In function `.handle_event': (.text+0x67dd0): multiple definition of `.handle_event' drivers/pcmcia/built-in.o:(.text+0xcfcc): first defined here drivers/usb/built-in.o: In function `handle_event': (.opd+0x5bc8): multiple definition of `handle_event' drivers/pcmcia/built-in.o:(.opd+0xed0): first defined here Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: xhci: URB cancellation support.Sarah Sharp
Add URB cancellation support to the xHCI host controller driver. This currently supports cancellation for endpoints that do not have streams enabled. An URB is represented by a number of Transaction Request Buffers (TRBs), that are chained together to make one (or more) Transaction Descriptors (TDs) on an endpoint ring. The ring is comprised of contiguous segments, linked together with Link TRBs (which may or may not be chained into a TD). To cancel an URB, we must stop the endpoint ring, make the hardware skip over the TDs in the URB (either by turning them into No-op TDs, or by moving the hardware's ring dequeue pointer past the last TRB in the last TD), and then restart the ring. There are times when we must drop the xHCI lock during this process, like when we need to complete cancelled URBs. We must ensure that additional URBs can be marked as cancelled, and that new URBs can be enqueued (since the URB completion handlers can do either). The new endpoint ring variables cancels_pending and state (which can only be modified while holding the xHCI lock) ensure that future cancellation and enqueueing do not interrupt any pending cancellation code. To facilitate cancellation, we must keep track of the starting ring segment, first TRB, and last TRB for each URB. We also need to keep track of the list of TDs that have been marked as cancelled, separate from the list of TDs that are queued for this endpoint. The new variables and cancellation list are stored in the xhci_td structure. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: xhci: Scatter gather list support for bulk transfers.Sarah Sharp
Add support for bulk URBs that pass scatter gather lists to xHCI. This allows xHCI to more efficiently enqueue these transfers, and allows the host controller to take advantage of USB 3.0 "bursts" for bulk endpoints. Use requested length to calculate the number of TRBs needed for a scatter gather list transfer, instead of using the number of sglist entries. The application can pass down a scatter gather list that is bigger than it needs for the requested transfer. Scatter gather entries can cross 64KB boundaries, so be careful to setup TRBs such that no buffer crosses a 64KB boundary. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: xhci: Bulk transfer supportSarah Sharp
Allow device drivers to submit URBs to bulk endpoints on devices under an xHCI host controller. Share code between the control and bulk enqueueing functions when it makes sense. To get the best performance out of bulk transfers, SuperSpeed devices must have the bMaxBurst size copied from their endpoint companion controller into the xHCI device context. This allows the host controller to "burst" up to 16 packets before it has to wait for the device to acknowledge the first packet. The buffers in Transfer Request Blocks (TRBs) can cross page boundaries, but they cannot cross 64KB boundaries. The buffer must be broken into multiple TRBs if a 64KB boundary is crossed. The sum of buffer lengths in all the TRBs in a Transfer Descriptor (TD) cannot exceed 64MB. To work around this, the enqueueing code must enqueue multiple TDs. The transfer event handler may incorrectly give back the URB in this case, if it gets a transfer event that points somewhere in the first TD. FIXME later. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: xhci: Bandwidth allocation supportSarah Sharp
Since the xHCI host controller hardware (xHC) has an internal schedule, it needs a better representation of what devices are consuming bandwidth on the bus. Each device is represented by a device context, with data about the device, endpoints, and pointers to each endpoint ring. We need to update the endpoint information for a device context before a new configuration or alternate interface setting is selected. We setup an input device context with modified endpoint information and newly allocated endpoint rings, and then submit a Configure Endpoint Command to the hardware. The host controller can reject the new configuration if it exceeds the bus bandwidth, or the host controller doesn't have enough internal resources for the configuration. If the command fails, we still have the older device context with the previous configuration. If the command succeeds, we free the old endpoint rings. The root hub isn't a real device, so always say yes to any bandwidth changes for it. The USB core will enable, disable, and then enable endpoint 0 several times during the initialization sequence. The device will always have an endpoint ring for endpoint 0 and bandwidth allocated for that, unless the device is disconnected or gets a SetAddress 0 request. So we don't pay attention for when xhci_check_bandwidth() is called for a re-add of endpoint 0. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: xhci: Control transfer support.Sarah Sharp
Allow device drivers to enqueue URBs to control endpoints on devices under an xHCI host controller. Each control transfer is represented by a series of Transfer Descriptors (TDs) written to an endpoint ring. There is one TD for the Setup phase, (optionally) one TD for the Data phase, and one TD for the Status phase. Enqueue these TDs onto the endpoint ring that represents the control endpoint. The host controller hardware will return an event on the event ring that points to the (DMA) address of one of the TDs on the endpoint ring. If the transfer was successful, the transfer event TRB will have a completion code of success, and it will point to the Status phase TD. Anything else is considered an error. This should work for control endpoints besides the default endpoint, but that hasn't been tested. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: xhci: Allocate and address USB devicesSarah Sharp
xHCI needs to get a "Slot ID" from the host controller and allocate other data structures for every USB device. Make usb_alloc_dev() and usb_release_dev() allocate and free these device structures. After setting up the xHC device structures, usb_alloc_dev() must wait for the hardware to respond to an Enable Slot command. usb_alloc_dev() fires off a Disable Slot command and does not wait for it to complete. When the USB core wants to choose an address for the device, the xHCI driver must issue a Set Address command and wait for an event for that command. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: xhci: Root hub support.Sarah Sharp
Add functionality for getting port status and hub descriptor for xHCI root hubs. This is WIP because the USB 3.0 hub descriptor is different from the USB 2.0 hub descriptor. For now, we lie about the root hub descriptor because the changes won't effect how the core talks to the root hub. Later we will need to add the USB 3.0 hub descriptor for real hubs, and this code might change. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: xhci: No-op command queueing and irq handler.Sarah Sharp
xHCI host controllers can optionally implement a no-op test. This simple test ensures the OS has correctly setup all basic data structures and can correctly respond to interrupts from the host controller hardware. There are two rings exercised by the no-op test: the command ring, and the event ring. The host controller driver writes a no-op command TRB to the command ring, and rings the doorbell for the command ring (the first entry in the doorbell array). The hardware receives this event, places a command completion event on the event ring, and fires an interrupt. The host controller driver sees the interrupt, and checks the event ring for TRBs it can process, and sees the command completion event. (See the rules in xhci-ring.c for who "owns" a TRB. This is a simplified set of rules, and may not contain all the details that are in the xHCI 0.95 spec.) A timer fires every 60 seconds to debug the state of the hardware and command and event rings. This timer only runs if CONFIG_USB_XHCI_HCD_DEBUGGING is 'y'. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: xhci: Device context array allocation.Sarah Sharp
Instead of keeping a "frame list" like older host controllers, the xHCI host controller keeps internal representations of the USB devices, with a transfer ring per endpoint. The host controller queues Transfer Request Blocks (TRBs) to the endpoint ring, and then "rings the doorbell" for that device. The host controller processes the transfer, places a transfer completion event on the event ring, and interrupts the system. The device context base address array must be allocated by the xHCI host controller driver, along with the device contexts it points to. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: xhci: Ring allocation and initialization.Sarah Sharp
Allocate basic xHCI host controller data structures. For every xHC, there is a command ring, an event ring, and a doorbell array. The doorbell array is used to notify the host controller that work has been enqueued onto one of the rings. The host controller driver enqueues commands on the command ring. The HW enqueues command completion events on the event ring and interrupts the system (currently using PCI interrupts, although the xHCI HW will use MSI interrupts eventually). All rings and the doorbell array must be allocated by the xHCI host controller driver. Each ring is comprised of one or more segments, which consists of 16-byte Transfer Request Blocks (TRBs) that can be chained to form a Transfer Descriptor (TD) that represents a multiple-buffer request. Segments are linked into a ring using Link TRBs, which means they are dynamically growable. The producer of the ring enqueues a TD by writing one or more TRBs in the ring and toggling the TRB cycle bit for each TRB. The consumer knows it can process the TRB when the cycle bit matches its internal consumer cycle state for the ring. The consumer cycle state is toggled an odd amount of times in the ring. An example ring (a ring must have a minimum of 16 TRBs on it, but that's too big to draw in ASCII art): chain cycle bit bit ------------------------ | TD A TRB 1 | 1 | 1 |<------------- <-- consumer dequeue ptr ------------------------ | consumer cycle state = 1 | TD A TRB 2 | 1 | 1 | | ------------------------ | | TD A TRB 3 | 0 | 1 | segment 1 | ------------------------ | | TD B TRB 1 | 1 | 1 | | ------------------------ | | TD B TRB 2 | 0 | 1 | | ------------------------ | | Link TRB | 0 | 1 |----- | ------------------------ | | | | chain cycle | | bit bit | | ------------------------ | | | TD C TRB 1 | 0 | 1 |<---- | ------------------------ | | TD D TRB 1 | 1 | 1 | | ------------------------ | | TD D TRB 2 | 1 | 1 | segment 2 | ------------------------ | | TD D TRB 3 | 1 | 1 | | ------------------------ | | TD D TRB 4 | 1 | 1 | | ------------------------ | | Link TRB | 1 | 1 |----- | ------------------------ | | | | chain cycle | | bit bit | | ------------------------ | | | TD D TRB 5 | 1 | 1 |<---- | ------------------------ | | TD D TRB 6 | 0 | 1 | | ------------------------ | | TD E TRB 1 | 0 | 1 | segment 3 | ------------------------ | | | 0 | 0 | | <-- producer enqueue ptr ------------------------ | | | 0 | 0 | | ------------------------ | | Link TRB | 0 | 0 |--------------- ------------------------ Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: xhci: BIOS handoff and HW initialization.Sarah Sharp
Add PCI initialization code to take control of the xHCI host controller away from the BIOS, halt, and reset the host controller. The xHCI spec says that BIOSes must give up the host controller within 5 seconds. Add some host controller glue functions to handle hardware initialization and memory allocation for the host controller. The current xHCI prototypes use PCI interrupts, but the xHCI spec requires MSI-X interrupts. Add code to support MSI-X interrupts, but use the PCI interrupts for now. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: xhci: Support xHCI host controllers and USB 3.0 devices.Sarah Sharp
This is the first of many patches to add support for USB 3.0 devices and the hardware that implements the eXtensible Host Controller Interface (xHCI) 0.95 specification. This specification is not yet publicly available, but companies can receive a copy by becoming an xHCI Contributor (see http://www.intel.com/technology/usb/xhcispec.htm). No xHCI hardware has made it onto the market yet, but these patches have been tested under the Fresco Logic host controller prototype. This patch adds the xHCI register sets, which are grouped into five sets: - Generic PCI registers - Host controller "capabilities" registers (cap_regs) short - Host controller "operational" registers (op_regs) - Host controller "runtime" registers (run_regs) - Host controller "doorbell" registers These some of these registers may be virtualized if the Linux driver is running under a VM. Virtualization has not been tested for this patch. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: EHCI: update toggle state for linked QHsAlan Stern
This patch (as1245) fixes a bug in ehci-hcd. When an URB is queued for an endpoint whose QH is already in the LINKED state, the QH doesn't get refreshed. As a result, if usb_clear_halt() was called during the time that the QH was linked but idle, the data toggle value in the QH doesn't get reset. The symptom is that after a clear_halt, data gets lost and transfers time out. This problem is starting to show up now because the "ehci-hcd unlink speedups" patch causes QHs with no queued URBs to remain linked for a suitable time. The patch utilizes the new endpoint_reset mechanism to fix the problem. When an endpoint is reset, the new method forcibly unlinks the QH (if necessary) and safely updates the toggle value. This allows qh_update() to be simplified and avoids using usb_device's toggle bits in a rather unintuitive way. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> CC: David Brownell <david-b@pacbell.net> Tested-by: David <david@unsolicited.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: r8a66597-hcd: use platform_data instead of module_paramYoshihiro Shimoda
CPU/board specific parameters (PLL clock, vif etc...) can be set by platform_data instead of module_param. v2: remove irq_sense member in platform_data because it can OR in IRQF_TRIGGER_LOW or IRQF_TRIGGER_FALLING against IORESOURCE_IRQ in the struct resource. Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Reviewed-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: EHCI: stagger frames for interrupt transfersAlan Stern
This patch (as1243) tries to improve ehci-hcd's scheduling of interrupt transfers. Instead of trying to cram all transfers with the same period into the same frame, the new code will spread the transfers out among lots of different frames. This should reduce the periodic schedule load in any one frame -- some host controllers have trouble when there's too much work to do. A more thorough approach would stagger the uframe values as well. But this is enough to make a big improvement. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Tested-by: Dwayne Fontenot <dwayne.fontenot@att.net> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15wusb: hwa-hc: Drop unused pci_suspend/resume hooks.Paul Mundt
CC drivers/usb/host/hwa-hc.o drivers/usb/host/hwa-hc.c:601: warning: initialization from incompatible pointer type drivers/usb/host/hwa-hc.c:602: warning: initialization from incompatible pointer type The prototype for these changed, so the message itself was dropped. As the only thing these hooks were doing was printing out the message for debugging, there is not much point in keeping them around. So, just kill them off. Cc: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org> Acked-by: David Vrabel <david.vrabel@csr.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: new flag for resume-from-hibernationAlan Stern
This patch (as1237) changes the way the PCI host controller drivers avoid retaining bogus hardware states during resume-from-hibernation. Previously we had reset the hardware as part of preparing to reinstate the memory image. But we can do better now with the new PM framework, since we know exactly which resume operations are from hibernation. The pci_resume method is changed to accept a flag indicating whether the system is resuming from hibernation. When this flag is set, the drivers will reset the hardware to get rid of any existing state. Similarly, the pci_suspend method is changed to remove the pm_message_t argument. It's no longer needed, since no special action has to be taken when preparing to reinstate the memory image. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: move PCI host controllers to new PM frameworkAlan Stern
This patch (as1236) converts the USB PCI power management routines over to the new PM framework. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: EHCI: create sysfs companion files directly in the controller deviceGreg Kroah-Hartman
The controller device is where we want this sysfs file, especially as the dev pointer is about to go away... Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: OHCI: use the ohci structure directly in debugfs files.Greg Kroah-Hartman
Right now we jump through some hoops to get to the struct ohci_hcd struct in the ohci debugfs files. Remove all of the fun casting around and just use the pointer directly. This is needed as the dev pointer in the hcd structure is going away, and it makes the code simpler and smaller Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: UHCI: use the new usb debugfs directoryGreg Kroah-Hartman
All usb debugfs files should be behind the usb directory, not at the root of debugfs. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: OHCI: use the new usb debugfs directoryGreg Kroah-Hartman
All usb debugfs files should be behind the usb directory, not at the root of debugfs. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: FHCI: use the new usb debugfs directoryGreg Kroah-Hartman
All usb debugfs files should be behind the usb directory, not at the root of debugfs. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: EHCI: use the new usb debugfs directoryGreg Kroah-Hartman
All usb debugfs files should be behind the usb directory, not at the root of debugfs. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: host/ohci-hcd.c: fix sparse warningsH Hartley Sweeten
Fix sparse warnings in drivers/usb/host/ohci-hcd.c. Four of the following sparse warning are seen when building on ARM due do the macro raw_local_irq_save(): warning: symbol 'temp' shadows an earlier one Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: UHCI queue: use usb_endpoint_type()Matthias Kaehlcke
use usb_endpoint_type() instead of fiddling manually with bmAttributes Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: move orion-ehci's probe function to .devinit.textUwe Kleine-König
A pointer to ehci_orion_drv_probe is passed to the core via platform_driver_register and so the function must not disappear when the .init sections are discarded. Otherwise (if also having HOTPLUG=y) unbinding and binding a device to the driver via sysfs will result in an oops as does a device being registered late. An alternative to this patch is using platform_driver_probe instead of platform_driver_register plus removing the pointer to the probe function from the struct platform_driver. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Ronen Shitrit <rshitrit@marvell.com> Cc: Lennert Buytenhek <buytenh@marvell.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: David Brownell <david-b@pacbell.net> Cc: Nicolas Pitre <nico@marvell.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Tzachi Perelstein <tzachi@marvell.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15USB: move r8a66597_hcd's probe function to .devinit.textUwe Kleine-König
A pointer to r8a66597_probe is passed to the core via platform_driver_register and so the function must not disappear when the .init sections are discarded. Otherwise (if also having HOTPLUG=y) unbinding and binding a device to the driver via sysfs will result in an oops as does a device being registered late. An alternative to this patch is using platform_driver_probe instead of platform_driver_register plus removing the pointer to the probe function from the struct platform_driver. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Cc: Magnus Damm <damm@igel.co.jp> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-16usb/ps3: Add missing annotationsGeert Uytterhoeven
probe functions should be __devinit initialization functions should be __init Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Acked-by: Geoff Levand <geoffrey.levand@am.sony.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-15ps3: shorten ps3_system_bus_[gs]et_driver_data to ps3_system_bus_[gs]et_drvdataGeert Uytterhoeven
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Cc: Geoff Levand <geoffrey.levand@am.sony.com> Cc: Jim Paris <jim@jtan.com> Acked-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-06-10Merge branch 'ep93xx' into develRussell King
2009-05-29[ARM] 5526/1: ep93xx: usb driver cleanupHartley Sweeten
Cleanup the ohci-ep93xx driver. 1) Use the usb.h dbg() macro instead of pr_debug() so that the source filename is prefixed to the message and it is terminated with a linefeed. 2) Add error handling for the clk_get() call. 3) Update clkdev support so that the usb clock is matched by the dev_id instead of the con_id. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-05-28USB: isp1760: urb_dequeue doesn't always find the urbsWarren Free
The option driver (and presumably others) allocates several URBs when it opens and tries to free them when it closes. The isp1760_urb_dequeue function gets called, but the packet being dequeued is not necessarily at the front of one of the 32 queues. If not, the isp1760_urb_done function doesn't get called for the URB and the process trying to free it hangs forever on a wait_queue. This patch does two things. If the URB being dequeued has others queued behind it, it re-queues them. And it searches the queues looking for the URB being dequeued rather than just looking at the one at the front of the queue. [bigeasy@linutronix] whitespace fixes, reformating Cc: stable <stable@kernel.org> Signed-off-by: Warren Free <wfree@ipmn.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-04-23USB: ehci-sched.c: EHCI SITD scheduling bugfixDan Streetman
Without this patch, the driver won't check that the last fully-occupied uframe for a new split transaction was vacant beforehand. This can lead to a situation in which the first 188 bytes of a 192-byte isochronous transfer are scheduled in the same uframe as an existing interrupt transfer. The resulting schedule looks like this: uframe 0: 188-byte isoc-OUT SSPLIT, 8-byte int-IN SSPLIT uframe 1: 4-byte isoc-OUT SSPLIT The SSPLITs are intermingled, causing an error in the downstream hub's TT. If you are having problems with devices or hub ports resetting, or failed interrupt transfers, when you start using a USB audio or video (Isochronous) device, this patch may help. Signed-off-by: Dan Streetman <ddstreet@ieee.org> Reported-by: Kung James <kong1191@gmail.com> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Alan Stern <stern@rowland.harvard.edu>
2009-04-17USB: whci-hcd: check return value of usb_hcd_link_urb_to_ep()David Vrabel
Check the return value of usb_hcd_link_urb_to_ep() and do not add the urb to the ASL/PZL if it returns an error. Omitting the check results in urbs that appear to be submitted successfully but then cannot be unliked (because usb_hcd_check_unlink_urb() returns an error). This can cause khubd (for example) to block forever in usb_kill_urb(). Signed-off-by: David Vrabel <david.vrabel@csr.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-04-17USB: whci-hcd: provide a endpoint_reset methodDavid Vrabel
Provide a endpoint_reset method to reset sequence number and current window. This QHead information can only be changed while the qset is not in a schedule. Signed-off-by: David Vrabel <david.vrabel@csr.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-04-08Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 5446/1: ohci-at91: Limit vbus_pin assignment to the size of the array [ARM] 5445/1: AT91: Remove flexible array from USBH platform data [ARM] 5447/1: Add SZ_32K [ARM] omap: fix omap1 clock usecount decrement bug [ARM] pxa: register AC97 controller devices [ARM] pxa/csb701: do not register devices on non-csb726 boads [ARM] pxa/colibri: get rid of set_irq_type() [ARM] pxa/colibri: provide MAC address from ATAG_SERIAL [ARM] pxa/cm-x2xx: fix ucb1400 not being registered [ARM] pxa: Add support for suspend on PalmTX, T5 and LD [ARM] pxa: PalmTE2 support for battery, UDC, IrDA and backlight [ARM] pxa: Palm Tungsten E2 basic support [ARM] pxa/em-x270: add libertas device registration [ARM] pxa/magician: Enable bq24022 regulator for gpio_vbus and pda_power
2009-04-08[ARM] 5446/1: ohci-at91: Limit vbus_pin assignment to the size of the arrayJustin Waters
Currently, the vbus_pin assignment loop is limited by the value of the "ports" variable in the platform data. Now that the vbus_pin array is no longer flexible, we can use its actual size. Signed-off-by: Justin Waters <justin.waters@timesys.com> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-04-07dma-mapping: replace all DMA_31BIT_MASK macro with DMA_BIT_MASK(31)Yang Hongyang
Replace all DMA_31BIT_MASK macro with DMA_BIT_MASK(31) Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32)Yang Hongyang
Replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07dma-mapping: replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64)Yang Hongyang
Replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64) Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-28Merge branch 'origin' into develRussell King
Conflicts: sound/soc/pxa/pxa2xx-i2s.c
2009-03-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (97 commits) USB: qcserial: add device id for HP devices USB: isp1760: Add a delay before reading the SKIPMAP registers in isp1760-hcd.c USB: allow malformed LANGID descriptors USB: pxa27x_udc: typo fixes and code cleanups USB: gadget: gadget zero uses new suspend/resume hooks USB: gadget: composite device-level suspend/resume hooks USB: r8a66597-hcd: suspend/resume support USB: more u32 conversion after transfer_buffer_length and actual_length USB: Fix cp2101 USB serial device driver termios functions for console use USB: CP2101 New Device ID USB: ipaq: handle 4 endpoint devices USB: S3C: Move usb-control.h to platform include USB: ohci-hcd: Add ARCH_S3C24XX to the ohci-s3c2410.c glue USB: pedantic: spelling correction in comment for ch9.h USB: host: fix sparse warning: Using plain integer as NULL pointer USB: ohci-s3c2410: fix name of bus clock USB: ohci-s3c2410: remove <mach/hardware.h> include USB: serial: rename cp2101 driver to cp210x USB: CP2101 Reduce Error Logging USB: CP2101 Support AN205 baud rates ...
2009-03-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (61 commits) Dynamic debug: fix pr_fmt() build error Dynamic debug: allow simple quoting of words dynamic debug: update docs dynamic debug: combine dprintk and dynamic printk sysfs: fix some bin_vm_ops errors kobject: don't block for each kobject_uevent sysfs: only allow one scheduled removal callback per kobj Driver core: Fix device_move() vs. dpm list ordering, v2 Driver core: some cleanup on drivers/base/sys.c Driver core: implement uevent suppress in kobject vcs: hook sysfs devices into object lifetime instead of "binding" driver core: fix passing platform_data driver core: move platform_data into platform_device sysfs: don't block indefinitely for unmapped files. driver core: move knode_bus into private structure driver core: move knode_driver into private structure driver core: move klist_children into private structure driver core: create a private portion of struct device driver core: remove polling for driver_probe_done(v5) sysfs: reference sysfs_dirent from sysfs inodes ... Fixed conflicts in drivers/sh/maple/maple.c manually
2009-03-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (96 commits) sh: add support for SMSC Polaris platform sh: fix the HD64461 level-triggered interrupts handling sh: sh-rtc wakeup support sh: sh-rtc invalid time rework sh: sh-rtc carry interrupt rework sh: disallow kexec virtual entry sh: kexec jump: fix for ftrace. sh: kexec: Drop SR.BL bit toggling. sh: add kexec jump support sh: rework kexec segment code sh: simplify kexec vbr code sh: Flush only the needed range when unmapping a VMA. sh: Update debugfs ASID dumping for 16-bit ASID support. sh: tlb-pteaex: Kill off legacy PTEA updates. sh: Support for extended ASIDs on PTEAEX-capable SH-X3 cores. sh: sh7763rdp: Change IRQ number for sh_eth of sh7763rdp sh: espt-giga board support sh: dma: Make G2 DMA configurable. sh: dma: Make PVR2 DMA configurable. sh: Move IRQ multi definition of DMAC to defconfig ...
2009-03-25Merge branch 'for-next' of ↵Russell King
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 into devel
2009-03-24USB: FHCI: use dev_name() in place of bus_id.Sachin Sant
Replace references to bus_id with dev_name() to fix fhci driver build break. drivers/usb/host/fhci-hcd.c:586: error: struct device has no member named bus_id drivers/usb/host/fhci-hcd.c:653: error: struct device has no member named bus_id drivers/usb/host/fhci-dbg.c:111: error: struct device has no member named bus_id Signed-off-by: Sachin Sant <sachinp@in.ibm.com> Acked-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-03-24USB: isp1760: Add a delay before reading the SKIPMAP registers in isp1760-hcd.cCatalin Marinas
The data read from the SKIPMAP registers is not immediately available after writing and the driver panics when a packet is enqueued from the interrupt handler. This patch adds an ndelay(195) before these registers are read (delay value mentioned in section 15.1.1.3 of the ISP1760 data sheet). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>