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2017-04-11usb: dwc3: use BIT() macro where possibleRoger Quadros
To avoid checkpatch warnings with new patches let's start using the BIT() macro wherever possible. Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: gadget: f_fs: simplify ffs_dev name handlingMichal Nazarewicz
Currently ffs_dev::name can be either allocated by the client of the ffs_dev structure or by the f_fs.c core itself. The former is used by g_ffs while the latter happens with configfs. Historically, g_ffs did not need to allocate separate buffer for the name so what is now f_fs.c core never cared about freeing that space. With configfs the name needs to be copied since the memory is not guaranteed to be availeble after ffs_set_inst_name finishes. The complication is therefore here to avoid allocations in the g_ffs case but it complicates the code inproportinally to benefits it provides. In particular, g_ffs is considered ‘legacy’ so optimising for its sake is unlikely to be worth the effort. With that observation in mind, simplify the code by unifying the code paths in g_ffs and configfs paths. Furthermore, instead of allocating a new buffer for the name, simply embed it in the ffs_dev structure. This further makes the memory management less convoluted and error-prone. The configfs interface for functionfs imposed a limit of 40 characters for the name so this results in a 41-byte buffer added to the structure. (For short names this may lead to wasted memory but the actual amount is not immediately obvious and depends on pointer size and which slab buckets the structure and name would fall into). Signed-off-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: dwc2: simplify optional reset handlingPhilipp Zabel
As of commit bb475230b8e5 ("reset: make optional functions really optional"), the reset framework API calls use NULL pointers to describe optional, non-present reset controls. This allows to return errors from devm_reset_control_get_optional and to call reset_control_(de)assert unconditionally. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: phy: Remove unused configBaolin Wang
Since the old common Samsung USB PHY code has been removed by commit ea2fdf8423 ("usb: phy: samsung: remove old common USB PHY code"), thus remove the unused config. Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: gadget: dummy_hcd: Fix wrong power status bit clear/reset in ↵Yuyang Du
dummy_hub_control() This fixes the commit: 1cd8fd2887e1 ("usb: gadget: dummy_hcd: add SuperSpeed support"). In the case of ClearPortFeature and USB_PORT_FEAT_POWER, simply clear the right bit regardless of what the wValue is. Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Yuyang Du <yuyang.du@intel.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: mtu3: Replace the extcon APIChanwoo Choi
This patch uses the resource-managed extcon API for extcon_register_notifier() and replaces the deprecated extcon API as following: - extcon_get_cable_state_() -> extcon_get_state() Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Chunfeng Yun <chunfeng.yun@mediatek.com> Cc: linux-usb@vger.kernel.org Tested-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Acked-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: gadget: u_ether: conditionally align transfer sizeFelipe Balbi
Unless HW sets quirk_ep_out_aligned_size, gadget driver shouldn't make any efforts towards aligning transfers. If the UDC needs, it *must* set the quirk flag. Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: gadget: u_ether: use better list accessorsFelipe Balbi
We have helpers for some of these, let's rely on them instead of open coding what they do in u_ether.c Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: dwc3: trace: change format for string to cmd traceFelipe Balbi
a %x is much easier for a human to parse when reading tracepoint output. Let's change it. Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: gadget: reword configuration choicesRomain Izard
As USB_CONFIGFS is not a part of the "USB Gadget Drivers" choice anymore, the name for the option and its attached description needs to be more descriptive. It appears one level higher in the configuration menu, and without the context provided by the comments for the choice entry, it needs to make sense on its own. Conversely, the "USB Gadget Drivers" entry now only introduces the legacy drivers, where one or more functions are combined in a single driver. As the configfs option can be used as a full-fledged alternative, rename the choice entry to show that it is not the only way to provice service as an USB gadget. Signed-off-by: Romain Izard <romain.izard.pro@gmail.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: gadget: legacy gadgets are optionalRomain Izard
With commit bc49d1d17dcf ("usb: gadget: don't couple configfs to legacy gadgets"),it is possible to build a modular kernel with both built-in configfs support and modular legacy gadget drivers. But when building a kernel without modules, it is also necessary to be able to build with configfs but without any legacy gadget driver. This was a possible configuration when the USB_CONFIGFS was a part of the choice options, but not anymore. Mark the choice for legacy gadget drivers as optional restores this. Fixes: bc49d1d17dcf ("usb: gadget: don't couple configfs to legacy gadgets") Cc: <stable@vger.kernel.org> # 4.9+ Signed-off-by: Romain Izard <romain.izard.pro@gmail.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: dwc3: gadget: Fix starting microframe for ISOCJohn Youn
The gadget wants to set the starting microframe for the first ISOC TRB to 4 microframes in the future, but it does so by multiplying the dep->interval. This only works if dep->interval = 1. For other intervals it will put it 4 *intervals* in the future which may be way too much. Fix so that it always adds just one interval or at least 4 microframes. Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: dwc3: exynos: change goto labels to meaningful namesShuah Khan
Change goto labels to meaningful names from a series of errNs. Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: dwc3: remove dwc3_gadget_init_hw_endpointsBryan O'Donoghue
A previous patch in the series reduces the number of callsites of dwc3_gadget_init_hw_endpoints from two to one. This patch removes the redundant step of wrappering one function in the other, which can be done by adding a parameter to dwc3_gadget_init_endpoints and moving the linked-list initialization of dwc->gadet.ep_list. Signed-off-by: Bryan O'Donoghue <pure.logic@nexus-software.ie> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: dwc3: refactor gadget endpoint count calculationBryan O'Donoghue
- DWC_USB3_NUM indicates the number of Device mode single directional endpoints, including OUT and IN endpoint 0. - DWC_USB3_NUM_IN_EPS indicates the maximum number of Device mode IN endpoints active at any time, including control endpoint 0. It's possible to configure RTL such that DWC_USB3_NUM_EPS is equal to DWC_USB3_NUM_IN_EPS. dwc3-core calculates the number of OUT endpoints as DWC_USB3_NUM minus DWC_USB3_NUM_IN_EPS. If RTL has been configured with DWC_USB3_NUM_IN_EPS equal to DWC_USB3_NUM then dwc3-core will calculate the number of OUT endpoints as zero. For example a from dwc3_core_num_eps() shows: [ 1.565000] /usb0@f01d0000: found 8 IN and 0 OUT endpoints This patch refactors the endpoint calculation down to one variable dwc->num_eps taking care to maintain the current mapping of endpoints for fixed FPGA configurations as described in Table 4-7 of version 2.60a of the DWC USB3 databook. The endpoint mapping will then be EP-OUT, EP-IN etc, up to DWC_USB3_NUM. If DWC_USB3_NUM is odd then OUT will take the extra endpoint. Suggested-by: Felipe Balbi <balbi@kernel.org> Signed-off-by: Bryan O'Donoghue <pure.logic@nexus-software.ie> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: dwc3: make macros safe to expression argumentsRoger Quadros
We must make sure that our macros are safe against expressions passed as arguments. We have seen one problem where GTXFIFOSIZ(n) was failing when passed the expression (epnum >> 1) as argument. The problem was caused by operator precedence between >> and *. To make sure macros are safe, we just wrap argument with () when using it. Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: dwc2: Add support for STM32F429/439/469 USB OTG HS/FS in FS mode ↵Bruno Herrera
(internal PHY) This patch introduces a new parameter to activate USB OTG HS/FS core embedded phy transceiver. The STM32F4x9 SoC uses the GGPIO register to enable the transceiver. Also add the dwc2_set_params function for stm32f4 otg fs. Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Bruno Herrera <bruherrera@gmail.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: gadget: udc: remove unnecessary variable and update function prototypeGustavo A. R. Silva
Remove unnecessary variable and update function prototype. Acked-by: Michal Nazarewicz <mina86@mina86.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: gadget: udc: avoid use of freed pointerGustavo A. R. Silva
Rewrite udc_free_dma_chain() function to avoid use of pointer after free. Addresses-Coverity-ID: 1091172 Acked-by: Michal Nazarewicz <mina86@mina86.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: dwc2: Make sure we disconnect the gadget stateJohn Stultz
I had seen some odd behavior with HiKey's usb-gadget interface that I finally seemed to have chased down. Basically every other time I plugged in the OTG port, the gadget interface would properly initialize. The other times, I'd get a big WARN_ON in dwc2_hsotg_init_fifo() about the fifo_map not being clear. Ends up if we don't disconnect the gadget state, the fifo-map doesn't get cleared properly, which causes WARN_ON messages and also results in the device not properly being setup as a gadget every other time the OTG port is connected. So this patch adds a call to dwc2_hsotg_disconnect() in the reset path so the state is properly cleared. With it, the gadget interface initializes properly on every plug in. Cc: Wei Xu <xuwei5@hisilicon.com> Cc: Guodong Xu <guodong.xu@linaro.org> Cc: Amit Pundir <amit.pundir@linaro.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: John Youn <johnyoun@synopsys.com> Cc: Douglas Anderson <dianders@chromium.org> Cc: Chen Yu <chenyu56@huawei.com> Cc: Felipe Balbi <felipe.balbi@linux.intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-usb@vger.kernel.org Acked-by: John Youn <johnyoun@synopsys.com> Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-11usb: gadget: uvc: Missing files for configfs interfacePetr Cvek
Commit 76e0da34c7ce ("usb-gadget/uvc: use per-attribute show and store methods") caused a stringification of an undefined macro argument "aname", so three UVC parameters (streaming_interval, streaming_maxpacket and streaming_maxburst) were named "aname". Add the definition of "aname" to the main macro and name the filenames as originaly intended. Signed-off-by: Petr Cvek <petr.cvek@tul.cz> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-04-10USB: serial: quatech2: drop redundant tty_buffer_request_roomJohan Hovold
Drop redundant calls to tty_buffer_request_room and use the more efficient tty_insert_flip_char when inserting single characters. Signed-off-by: Johan Hovold <johan@kernel.org>
2017-04-10USB: serial: iuu_phoenix: drop excessive sanity checksJohan Hovold
The transfer buffers and URBs are allocated and initialised by USB serial core during probe, and there's no need to check for NULL transfer buffers in the bulk-in completion handlers. Signed-off-by: Johan Hovold <johan@kernel.org>
2017-04-08usb: xhci: bInterval quirk for TI TUSB73x0Roger Quadros
As per [1] issue #4, "The periodic EP scheduler always tries to schedule the EPs that have large intervals (interval equal to or greater than 128 microframes) into different microframes. So it maintains an internal counter and increments for each large interval EP added. When the counter is greater than 128, the scheduler rejects the new EP. So when the hub re-enumerated 128 times, it triggers this condition." This results in Bandwidth error when devices with periodic endpoints (ISO/INT) having bInterval > 7 are plugged and unplugged several times on a TUSB73x0 XHCI host. Workaround this issue by limiting the bInterval to 7 (i.e. interval to 6) for High-speed or faster periodic endpoints. [1] - http://www.ti.com/lit/er/sllz076/sllz076.pdf Cc: stable <stable@vger.kernel.org> Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: xhci: refine xhci_decode_trb()Lu Baolu
Replace 'TRB_FIELD_TO_TYPE(field3)' with 'type' to simplify code. Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: xhci: fix link trb decodingLu Baolu
xhci_decode_trb() treats a link trb in the same way as that for an event trb. This patch fixes this by decoding the link trb according to the spec. Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: xhci: remove xhci_dbg_ctx()Lu Baolu
XHCI context changes have already been traced by the trace events. It's unnecessary to put the same message in kernel log. This patch removes the use of xhci_dbg_ctx(). Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: xhci: remove xhci_debug_trb()Lu Baolu
Every XHCI TRB has already been traced by the trb trace events. It is unnecessary to put the same message in kernel log. This patch removes xhci_debug_trb(). Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: xhci: remove ring debugging codeLu Baolu
XHCI ring changes have already been traced by the ring trace events. It's unnecessary to put the same messages in kernel log. This patch removes the debugging code for a ring. Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: xhci: remove enq_updates and deq_updates from ringLu Baolu
enq_updates and deq_updates were introduced in the first place to check whether an xhci hardware is able to respond to trbs enqueued in the ring. We now have trb tracers to trace every single enqueue/dequeue trb. It's time to remove them and the associated debugging code. Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: xhci: remove error messages for failed memory allocationLu Baolu
Omit extra messages for memory allocation failure. Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: xhci: make several functions staticLu Baolu
Several functions have a single user in the same file where it is defined. There's no need to expose it anywhere else. Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: xhci: remove xhci_dbg_ep_rings()Lu Baolu
xhci_dbg_ep_rings() isn't used in xhci driver anymore. Remove it to reduce the module binary size. Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: xhci: add xhci_log_ring trace eventsLu Baolu
This patch creates a new event class called xhci_log_ring, and defines the events used for tracing the change of all kinds of rings used by an xhci host. An xHCI ring is basically a memory block shared between software and hardware. By tracing changes of rings, it makes the life easier for debugging hardware or software problems. This info can be used, later, to print, in a human readable way, the life cycle of an xHCI ring using the trace-cmd tool and the appropriate plugin. Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Reviewed-by: Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08xhci: Rework how we handle unresponsive or hoptlug removed hostsMathias Nyman
Introduce a new xhci_hc_died() function that takes care of handling pending commands and URBs if a host controller becomes unresponsive. This addresses issues on hotpluggable xhci controllers that disappear from the bus suddenly, often while the bus (PCI) remove function is still being processed. xhci_hc_died() sets a XHCI_STATUS_DYING flag to prevent new URBs and commands or to be queued. The flag also ensures xhci_hc_died() will give back pending commands and URBs once. Host is considered dead if register read returns 0xffffffff, or host fails to abort the command ring, or fails stopping an endpoint after trying for 5 seconds. Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08xhci: Do not halt the host until both HCD have disconnected their devices.Joel Stanley
We can't halt the host controller immediately when first HCD is removed as it will cause problems if we have devices attached to the second (primary) HCD, like a keyboard. We've been carrying this in our Linux-as-a-bootloader environment for a little while now. The machines all have the same TI TUSB73x0 part, and when we kexec the devices don't come back until a system power cycle. [minor adjustments, code comments and remove HALT check -Mathias] Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08xhci: add slot and endpoint numbers to debug messages in handle_tx_eventZhengjun Xing
There's one annoyance in how xhci prints debug messages, we often get logs with messages but it's hard to say from which device and endpoint the message originates. Add slot_id, ep_index messages in handle_tx_event. Signed-off-by: Zhengjun Xing <zhengjun.xing@linux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: host: xhci: fix up Control Transfer TRB decoderFelipe Balbi
Format for each TRB in each control transfer stage differs. Let's make sure we correctly pretty print these fields to avoid confusion. Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: host: xhci: add Slot and EP Context tracersFelipe Balbi
With these, we can track what's happening with the HW while executing each and every command. It will give us visibility into how the different contexts are being modified by xHC which can bring insight into problems while debugging. Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: host: xhci: extract xhci_slot_state_string()Felipe Balbi
By extracting and exposing xhci_slot_state_string() in a header file, we can re-use it to print Slot Context State from our tracepoints, which can aid in tracking down problems related to command execution. Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: host: xhci: print device slot from URB tracersFelipe Balbi
This will help us figuring out which device $this URB belongs to while debugging. Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: xhci: Add port test modes support for usb2.Guoqing Zhang
For usb2 ports, the port test mode Test_J_State, Test_K_State, Test_Packet, Test_SE0_NAK and Test_Force_En can be enabled as described in usb2 spec. USB2 test mode is a required hardware feature for system integrators validating their hardware according to USB spec, regarding signal strength and stuff. It is purely a hardware test feature. Usually you need an oscilloscope and have to enable those test modes on the hardware. This will send some specific test patterns on D+/D-. There is no report available (in Linux itself) as it is purely externally visible. Regular USB usage is not possible at that time. Anyone (well access to e.g. /dev/bus/usb/001/001 provided) can use it by sending appropriate USB_PORT_FEAT_TEST requests to the hub. [Add better commit message by Alexander Stein -Mathias] Signed-off-by: Guoqing Zhang <guoqing.zhang@intel.com> Cc: Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: xhci: Expose xhci_start() function.Guoqing Zhang
Change the visability of xhci_start() so that it can be used when enabling test mode. Signed-off-by: Guoqing Zhang <guoqing.zhang@intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: xhci: Add helper function xhci_disable_slot().Guoqing Zhang
Refactoring slot disable related code into a helper function xhci_disable_slot() which can be used when enabling test mode. Signed-off-by: Guoqing Zhang <guoqing.zhang@intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: xhci: Add helper function xhci_set_power_on().Guoqing Zhang
Refactoring port power on/off related code into a helper function xhci_set_power_on() which can be reused when enabling test mode. [set port state to neutral before writing port power -Mathias] Signed-off-by: Guoqing Zhang <guoqing.zhang@intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: xhci: clear EINT bit in status correctlyLu Baolu
EINT(Event Interrupt) is a write-1-to-clear type of bit in xhci status register. It should be cleared by writing a 1. Writing 0 to this bit has no effect. Xhci driver tries to clear this bit by writing 0 to it. This is not the right way to go. This patch corrects this by reading the register first, then clearing all RO/RW1C/RsvZ bits and setting the clearing bit, and writing back the new value at last. Xhci spec requires that software that uses EINT shall clear it prior to clearing any IP flags in section 5.4.2. This is the reason why this patch is CC'ed stable as well. [old way didn't cause any issues, skip stable, send to next -Mathias] Cc: Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: xhci: plat: Enable async suspend/resumeAndrew Bresticker
USB host controllers can take a significant amount of time to suspend and resume, adding several hundred miliseconds to the kernel resume time. Since the XHCI controller has no outside dependencies (other than clocks, which are suspended late/resumed early), allow it to suspend and resume asynchronously. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Tested-by: Andrew Bresticker <abrestic@chromium.org> Tested-by: Robert Foss <robert.foss@collabora.com> Signed-off-by: Robert Foss <robert.foss@collabora.com> Reviewed-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: usbip: Remove unnecessary get_vdev()Yuyang Du
vhci_tx_urb() should be able to get the vhci_device from its caller vhci_urb_enqueue(), instead of brutal-force searching it. Reviewed-by: Krzysztof Opasiak <k.opasiak@samsung.com> Signed-off-by: Yuyang Du <yuyang.du@intel.com> Acked-by: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: misc: refactor codeGustavo A. R. Silva
Code refactoring to make the flow easier to follow. Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08usb: misc: add missing continue in switchGustavo A. R. Silva
Add missing continue in switch. Addresses-Coverity-ID: 1248733 Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>