[PATCH 1/1] usb: gadget: f_loopback: fix the warning during the enumeration

The current code tries to allocate memory with GFP_KERNEL at interrupt context, it would show below warning during the enumeration when I test it with chipidea hardware, change GFP flag as GFP_ATOMIC can fix this issue. [ 40.438237] zero gadget: high-speed config #2: loopback [ 40.444924]

[PATCH v2 10/12] usb: xhci: dbc: add handshake between debug target and host

After DbC setup, debug target needs to wait until tty driver and application (e.g. mincom) on debug taget start. Otherwise, out messages might be ignored. This patch adds a ping/pong mechanism between debug target and host. Debug target will be waiting there until user presses 'Y' or 'y' in the

[PATCH v2 08/12] usb: xhci: dbc: handle endpoint stall

In case of endpoint stall, software is able to detect the situation by reading DCCTRL.HIT or DCCTRL.HOT bits. DbC follows the normal USB framework to handle endpoint stall. When software detects endpoint stall situation, it should wait until endpoint is recovered before read or write oprations.

[PATCH v2 09/12] x86: early_printk: add USB3 debug port earlyprintk support

Add support for early printk by writing debug messages to the USB3 debug port. Users can use this type of early printk by specifying kernel parameter of "earlyprintk=xdbc". This gives users a chance of providing debug output. Signed-off-by: Lu Baolu ---

[PATCH v2 00/12] usb: early: add support for early printk through USB3 debug port

This patch series adds support for early printk through USB3 debug port. USB3 debug port is described in xHCI specification as an optional extended capability. The first patch adds a file in sysfs, through which users can check whether the debug capability is supported by a specific host

[PATCH v2 06/12] usb: xhci: dbc: add bulk out and bulk in interfaces

This patch adds interfaces for bulk out and bulk in ops. These interfaces could be used to implement early printk bootconsole or hook to various system debuggers. Signed-off-by: Lu Baolu --- drivers/usb/early/xhci-dbc.c | 373 +++

[PATCH v2 04/12] usb: xhci: dbc: add support for Intel xHCI dbc quirk

On Intel platform, if the debug target is connected with debug host, enabling DCE bit in command register leads to a hung bus state. In the hung state, the host system will not see a port connected status bit set. Hence debug target fails to be probed. The state could be resolved by performing a

[PATCH v2 05/12] usb: xhci: dbc: add debug buffer

"printk" is not suitable for dbc debugging especially when console is in usage. This patch adds a debug buffer in dbc driver and puts the debug messages in this local buffer. The debug buffer could be dumped whenever the console is not in use. This part of code will not be visible unless DBC_DEBUG

[PATCH v2 12/12] usb: doc: add document for xHCI DbC driver

Add Documentation/usb/xhci-dbc.txt. This document includes development status and user guide for USB3 debug port. Signed-off-by: Lu Baolu --- Documentation/usb/xhci-dbc.txt | 325 + MAINTAINERS| 1 +

[PATCH v2 03/12] usb: xhci: dbc: probe and setup xhci debug capability

xHCI debug capability (DbC) is an optional functionality provided by an xHCI host controller. Software learns this capability by walking through the extended capability list in mmio of the host. This patch introduces the code to probe and initialize the debug capability hardware during early

[PATCH v2 02/12] x86: fixmap: add permanent fixmap for xhci debug port

xHCI compatible USB3 host controller may provide debug capability which enables low-level system debug over USB. In order to probing this debug capability, Linux kernel needs to map and access the mmio of the host controller during early boot. This patch adds permenent fixmap pages in

[PATCH v2 07/12] usb: xhci: dbc: handle dbc-configured exit

DbC might exit configured state in some cases (refer to 7.6.4.4 in xHCI spec 1.1). Software needs detect and clear this situation by clearing DCCTRL.DCR and wait until the DbC configured before read or write oprations. Signed-off-by: Lu Baolu ---

[PATCH v2 01/12] usb: xhci: add sysfs file for xHCI debug port

This patch adds a sysfs file for users to check 1) whether the debug capability is implemented by hardware; 2) if supported, which state does it stay at. With a host that supports debug port, a file named "debug_port_state" will be created under the device sysfs directory. Reading this file will

[PATCH v2 11/12] usb: serial: usb_debug: add support for dbc debug device

This patch add dbc debug device support in usb_debug driver. Signed-off-by: Lu Baolu --- drivers/usb/serial/usb_debug.c | 28 +--- 1 file changed, 25 insertions(+), 3 deletions(-) diff --git a/drivers/usb/serial/usb_debug.c

Re: implement put_char() in cdc-acm

On Mon, 2015-11-02 at 21:27 +0100, Sven Brauch wrote: > On 02/11/15 12:32, Oliver Neukum wrote: > > given this test I will submit the patch. > Mind you, I don't know if the improvement is due to your patch or other > things. I didn't test the new kernel without your patch; should I? If you find

[PATCH 1/1] usb: chipidea: clean up CONFIG_USB_CHIPIDEA_DEBUG reference

Since this configuration option has deleted, cleans up all its references. Signed-off-by: Peter Chen Reported-by: Valentin Rothberg --- Documentation/usb/chipidea.txt | 4 ++-- drivers/usb/chipidea/core.c| 1 - 2 files changed, 2

Re: [PATCH V4] usb: remove unnecessary CONFIG_PM dependency from USB_OTG

On Thu, Oct 29, 2015 at 08:52:23AM -0500, Nathan Sullivan wrote: > The USB OTG support currently depends on power management > (CONFIG_PM) being enabled, but does not actually need it enabled. > Remove this dependency. > > Tested on Bay Trail hardware with dwc3 USB. > > Signed-off-by: Nathan

Re: [PATCH V4] usb: remove unnecessary CONFIG_PM dependency from USB_OTG

Hi, Nathan Sullivan writes: > On Tue, Nov 03, 2015 at 07:56:55AM -0600, Felipe Balbi wrote: >> >> Hi, >> >> Nathan Sullivan writes: >> > The USB OTG support currently depends on power management >> > (CONFIG_PM) being enabled, but does not

Re: [PATCH V6 1/1] usb:serial: Add Fintek F81532/534 driver

On Tue, 2015-11-03 at 11:51 +0800, Peter Hung wrote: > This driver is for Fintek F81532/F81534 USB to Serial Ports IC. > > Features: > 1. F81534 is 1-to-4 & F81532 is 1-to-2 serial ports IC > 2. Support Baudrate from B50 to B150 (excluding B100). > 3. The RTS signal can be transformed

[PATCH 17/23] usb: gadget: composite: add usb_get_interface_id() function

Introduce function returning id of interface at given index in function. The id value is equal bInterfaceNumber field in interface descriptor. This value can be useful during preparation of class or vendor specific descriptors in prep_vendor_descs() callback. It can be also necessary to handle

Re: [PATCH v4 3/3] USB: serial: cp210x: Workaround cp2108 GET_LINE_CTL bug

[...] Hi Johan, I'd like to add tx_empty() and replace cp210x_get/set_config with simpler functions, as we discussed before. While the tx_empty patch could be made against the current kernel, the latter would have to be made against my previous patch set. How should this be done? Thanks,

Re: implement put_char() in cdc-acm

On 03/11/15 09:58, Oliver Neukum wrote: > Basically > your device is special by doing implied flow control > when the host stops requesting data. Hmm, ok, interesting. But isn't that what always happens for USB bulk transfers, which is always the transport layer for the driver in question?

Re: [PATCH] USB: qcserial: Add support for Quectel EC20 Mini PCIe module

Petr Štetiar writes: > It seems like this device has same vendor and product IDs as G2K > devices, but it has different number of interfaces(4 vs 5) and also > different interface layout which makes it currently unusable: > > usbcore: registered new interface driver qcserial

[PATCH 22/23] usb: gadget: f_ecm: conversion to new API

Generate descriptors in new format and attach them to USB function in prep_descs(). Implement prep_vendor_descs() to supply class specific descriptors. Change set_alt() implementation and implement clear_alt() operation. Get rid of get_alt() which now is handled automatically. Remove boilerplate

[PATCH 20/23] usb: gadget: f_loopback: convert to new API

Generate descriptors in new format and attach them to USB function in prep_descs(). Change set_alt() implementation and implement clear_alt() operation. Remove unnecessary boilerplate code. Call usb_config_do_bind() in legacy gadget zero, because it uses usb_add_config_only() instead of

[PATCH 23/23] usb: gadget: f_rndis: conversion to new API

Generate descriptors in new format and attach them to USB function in prep_descs(). Implement prep_vendor_descs() to supply class specific descriptors. Change set_alt() implementation and implement clear_alt() operation. Remove boilerplate code. Change USB request lifetime management - now it's

[PATCH 19/23] usb: gadget: configfs: add new composite API support

Handle functions using new API properly. Signed-off-by: Robert Baldyga --- drivers/usb/gadget/configfs.c | 22 ++ 1 file changed, 22 insertions(+) diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c index d2101d8..fa5334f 100644

[PATCH 21/23] usb: gadget: f_sourcesink: convert to new API

Generate descriptors in new format and attach them to USB function in prep_descs(). Change set_alt() implementation and implement clear_alt() operation. Get rid of get_alt() callback, as now USB_REQ_GET_INTERFACE is handled automatically by composite framwework. Remove unnecessary boilerplate

[PATCH 18/23] usb: gadget: composite: enable adding USB functions using new API

Enable adding USB functions which use new API. Check if all necessary function ops are supplied and call prep_descs() to allow function register it's entity descriptors. Notice that bind() function is not called for USB functions using new API, as now bind procedure is handled for them in

[PATCH 16/23] usb: gadget: composite: add usb_function_get_ep() function

Introduce function returning endpoint of given index in active altsetting of specified interface. It's intended to be used in set_alt() callback to obtain endpoints of currently selected altsetting. Signed-off-by: Robert Baldyga --- drivers/usb/gadget/composite.c | 33

[PATCH 03/23] usb: gadget: f_sourcesink: free requests in sourcesink_disable()

USB requests in SourceSink function are allocated in sourcesink_get_alt() function, so we prefer to free them rather in sourcesink_disable() than in source_sink_complete() when request is completed with error. It provides better symetry in resource management and improves code readability.

[PATCH 11/23] usb: gadget: composite: generate old descs for compatibility

For now we generate descriptor arrays for each speed as it is done by old API functions, to allow use mixed new and old API based functions in single configurations. This will be removed after complete switch to new API. Signed-off-by: Robert Baldyga ---

[PATCH 07/23] usb: gadget: composite: add functions for descriptors handling

Introduce functions and macros allowing to create and assign descriptors to function easily. Macros build structure hierarchy using pointers to USB descriptors, while functions assigning them to gadget make a deep copy. It allows for easy conversion of USB functions to make them using new

[PATCH 10/23] usb: gadget: composite: handle vendor descs

After binding all configurations in gadget, call prep_vendor_descs() for each function which uses new API and implements this callback. Signed-off-by: Robert Baldyga --- drivers/usb/gadget/composite.c | 31 +++ include/linux/usb/composite.h |

[PATCH 15/23] usb: gadget: composite: handle get_alt() automatically

As now we store current altsetting number for each interface, we can handle USB_REQ_GET_INTERFACE automatically. Signed-off-by: Robert Baldyga --- drivers/usb/gadget/composite.c | 8 +++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git

[PATCH 00/23] usb: gadget: composite: introduce new function API

Hi Felipe, Here is my new patch series doing some changes in composite framework and modifying USB Function API. Some of concepts changed significantly, for example bind process is done automatically inside composite framework after collecting descriptors from all Functions. Hence bind()

[PATCH 14/23] usb: gadget: composite: introduce clear_alt() operation

Introduce clear_alt() callback, which is called when prevoiusly set altsetting is cleared. This can take place in two situations: - when another altsetting is selected, - during function disable. Thanks to symetry to set_alt(), clear_alt() simplifies managing of resources allocated in set_alt().

[PATCH 12/23] usb: gadget: composite: disable eps before calling disable() callback

Changes meaning of disable() operation for functions using new API. Before calling disable() callback composite automatically disables endpoints of active altsettings of given USB function. This reduces amount of boilerplate code in USB functions. Signed-off-by: Robert Baldyga

[PATCH 08/23] usb: gadget: composite: introduce new USB function ops

Introduce two new USB function operations: 1. prep_descs() prepares and assigns entity (interface and endpoint) descriptors to USB function. It's mandatory, in the new function API, as each USB function should have at least minimalistic set of entity descriptors. The minimum is single inferface

[PATCH 13/23] usb: gadget: composite: enable eps before calling set_alt() callback

Change set_alt() behavior for functions using new API. Before we call set_alt() callback, we disable endpoints of previously selected altsetting, and enable endpoints of currently selected altsetting, which reduces amount of boilerplate code in USB functions. We also calculate index of interface

[PATCH 09/23] usb: gadget: composite: handle function bind

As now USB function supplies entity descriptors to composite in prep_descs() callback, we can perform bind inside composite framework without involving bind() callback (which now is unused and will be removed after converting all functions in kernel to new API). For now we bind each configuration

[PATCH 04/23] usb: gadget: f_loopback: free requests in loopback_disable()

USB requests in Loopback function are allocated in loopback_get_alt() function, so we prefer to free them rather in loopback_disable() than in loopback_complete() when request is completed with error. It provides better symetry in resource management and improves code readability. Signed-off-by:

[PATCH 01/23] usb: gadget: f_sourcesink: make ISO altset user-selectable

So far it was decided during the bind process whether is iso altsetting included to f_sourcesink function or not. This decision was based on availability of isochronous endpoints. Since we can assemble gadget driver using composite framework and configfs from many different functions,

[PATCH 02/23] usb: gadget: f_sourcesink: compute req size once

Compute request size once before the loop instead of computing it in each loop iteration. Signed-off-by: Robert Baldyga --- drivers/usb/gadget/function/f_sourcesink.c | 45 +++--- 1 file changed, 22 insertions(+), 23 deletions(-) diff --git

[PATCH 06/23] usb: gadget: composite: introduce new descriptors format

Introduce new structures designed to contain information about descriptors. It splits descriptors in two categories: 1. Entity descs - interface and endpoint descriptors 2. Vendor descs - all other vendor and class specific descriptors Entity descriptors are embedded in hierarchy of structures

[PATCH 05/23] usb: gadget: configfs: fix error path

As usb_gstrings_attach() fail can happen when some USB functions are are already added to some configurations (in prevoius loop iterations), we should always call purge_configs_funcs() to be sure that failure is be handled properly. Signed-off-by: Robert Baldyga ---

Re: [PATCH v4 3/3] USB: serial: cp210x: Workaround cp2108 GET_LINE_CTL bug

On Tue, Nov 03, 2015 at 07:26:00AM -0600, Konstantin Shkolnyy wrote: > [...] > > Hi Johan, > > I'd like to add tx_empty() and replace cp210x_get/set_config with > simpler functions, as we discussed before. While the tx_empty patch > could be made against the current kernel, the latter would have

Re: [PATCH] uas: blacklist ASUSTek External Drive

Hi, On 03-11-15 11:48, Oliver Neukum wrote: It just doesn't work with uas. Blacklist it. Signed-off-by: Oliver Neukum --- drivers/usb/storage/unusual_uas.h | 7 +++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/storage/unusual_uas.h

Re: [PATCH V6 1/1] usb:serial: Add Fintek F81532/534 driver

On Tue, Nov 3, 2015 at 5:51 AM, Peter Hung wrote: > This driver is for Fintek F81532/F81534 USB to Serial Ports IC. > > Features: > 1. F81534 is 1-to-4 & F81532 is 1-to-2 serial ports IC > 2. Support Baudrate from B50 to B150 (excluding B100). > 3. The RTS signal can be

Re: [PATCH 00/12] usb: early: add support for early printk through USB3 debug port

On 10/28/15 at 04:00pm, Lu Baolu wrote: > This patch series adds support for early printk through USB3 debug port. > USB3 debug port is described in xHCI specification as an optional extended > capability. > > The first patch adds a file in debugfs, through which users can check > whether the

Re: implement put_char() in cdc-acm

On Tue, 2015-11-03 at 11:13 +0100, Sven Brauch wrote: > On 03/11/15 09:58, Oliver Neukum wrote: > > Basically > > your device is special by doing implied flow control > > when the host stops requesting data. > Hmm, ok, interesting. But isn't that what always happens for USB bulk > transfers, which

[PATCH] uas: blacklist ASUSTek External Drive

It just doesn't work with uas. Blacklist it. Signed-off-by: Oliver Neukum --- drivers/usb/storage/unusual_uas.h | 7 +++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/storage/unusual_uas.h b/drivers/usb/storage/unusual_uas.h index c85ea53..8aefb36 100644 ---

[PATCH] uas: no gfp argument to uas_submit_urbs()

This function must be called with a spinlock held. Memory can be allocated only with GFP_ATOMIC. Passing a gfp_t argument is a waste. Signed-off-by: Oliver Neukum --- drivers/usb/storage/uas.c | 24 1 file changed, 12 insertions(+), 12 deletions(-)

Re: Help needed for EHCI problem: removing an active bulk-in QH

On Tue, 3 Nov 2015, Peter Chen wrote: > On Mon, Nov 02, 2015 at 11:24:54AM -0500, Alan Stern wrote: > > On Mon, 2 Nov 2015, Peter Chen wrote: > > > > > Hi Alan, > > > > > > After a discussion with IC engineer, a brief idea like below: > > > > > > - Delete the QH from the asynclist directly,

[PATCH v5] usb: of: add an api to get dr_mode by the phy node

Some USB phy drivers have different handling for the controller in each dr_mode. But the phy driver does not have visibility to the dr_mode of the controller. This adds an api to return the dr_mode of the controller which associates the given phy node. Signed-off-by: Bin Liu ---

Calling For Assistance

--- For more details View below attachment -- Urgent Response Needed.pdf Description: Adobe PDF document

[PATCH v2 2/2] usb: dwc2: host: Clear interrupts before handling them

In general it is wise to clear interrupts before processing them. If you don't do that, you can get: 1. Interrupt happens 2. You look at system state and process interrupt 3. A new interrupt happens 4. You clear interrupt without processing it. This patch was actually a first attempt to fix

Mediasonic USB3.0 SATA Enclosure with UAS

I was a bit sad to see you guys blocked ATA pass though but I guess nothing can be done about VIA not supporting them. So this basically works. Nov 3 14:14:36 localhost kernel: [44188.236491] usb 9-1: new SuperSpeed USB device number 4 using xhci_hcd Nov 3 14:14:36 localhost kernel:

Re: [PATCH 1/2] usb: dwc2: host: Fix missing device insertions

John, On Fri, Oct 30, 2015 at 1:38 PM, John Youn wrote: > On 10/16/2015 3:10 PM, Douglas Anderson wrote: >> If you've got your interrupt signals bouncing a bit as you insert your >> USB device, you might end up in a state when the device is connected but >> the driver

[PATCH v2 1/2] usb: dwc2: host: Fix missing device insertions

If you've got your interrupt signals bouncing a bit as you insert your USB device, you might end up in a state when the device is connected but the driver doesn't know it. Specifically, the observed order is: 1. hardware sees connect 2. hardware sees disconnect 3. hardware sees connect 4.

Re: [PATCH 00/12] usb: early: add support for early printk through USB3 debug port

On 11/03/2015 05:42 PM, Dave Young wrote: On 10/28/15 at 04:00pm, Lu Baolu wrote: This patch series adds support for early printk through USB3 debug port. USB3 debug port is described in xHCI specification as an optional extended capability. The first patch adds a file in debugfs, through

Re: [PATCHv2] usb: dwc2: use devm_phy_optional_get

On 10/29/2015 01:41 AM, Uwe Kleine-König wrote: > Hello Stephen, > > On Wed, Oct 28, 2015 at 09:55:05PM -0600, Stephen Warren wrote: >> On 10/27/2015 12:18 PM, Uwe Kleine-König wrote: >>> Hello, >>> >>> On Tue, Oct 27, 2015 at 09:08:27AM -0600, Stephen Warren wrote: On 10/27/2015 01:41 AM,

Re: [PATCH V4] usb: remove unnecessary CONFIG_PM dependency from USB_OTG

On Tue, Nov 03, 2015 at 07:56:55AM -0600, Felipe Balbi wrote: > > Hi, > > Nathan Sullivan writes: > > The USB OTG support currently depends on power management > > (CONFIG_PM) being enabled, but does not actually need it enabled. > > Remove this dependency. > > > >

Re: [PATCH V4] usb: remove unnecessary CONFIG_PM dependency from USB_OTG

Hi, Peter Chen writes: > On Tue, Nov 03, 2015 at 07:56:55AM -0600, Felipe Balbi wrote: >> >> Hi, >> >> Nathan Sullivan writes: >> > The USB OTG support currently depends on power management >> > (CONFIG_PM) being enabled, but does not

Bug 95241 - null pointer assignment in dwc2 driver

This is just no notify about the bug as stated by Greg Kroah-Hartman. I have found the bug because it has also affected me with another router. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at

Re: [PATCH V4] usb: remove unnecessary CONFIG_PM dependency from USB_OTG

On Tue, Nov 03, 2015 at 07:56:55AM -0600, Felipe Balbi wrote: > > Hi, > > Nathan Sullivan writes: > > The USB OTG support currently depends on power management > > (CONFIG_PM) being enabled, but does not actually need it enabled. > > Remove this dependency. > > > >

Re: [PATCH 05/23] usb: gadget: configfs: fix error path

Hello. On 11/3/2015 3:53 PM, Robert Baldyga wrote: As usb_gstrings_attach() fail can happen when some USB functions are Failure? are already added to some configurations (in prevoius loop iterations), Previous? we should always call purge_configs_funcs() to be sure that failure

Re: [PATCH v2 11/12] usb: serial: usb_debug: add support for dbc debug device

On Tue, Nov 03, 2015 at 04:14:11PM +0800, Lu Baolu wrote: > This patch add dbc debug device support in usb_debug driver. > > Signed-off-by: Lu Baolu Acked-by: Johan Hovold -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the

Re: [PATCH] USB: qcserial: Add support for Quectel EC20 Mini PCIe module

Bjørn Mork [2015-11-03 13:37:56]: > > + case 4: > > + /* Don't claim the QMI/net interface */ > > + altsetting = -1; > > + break; > > + } > > I guess this means that we need to add an interface count quirk to the > qmi_wwan driver as well? I

Re: [PATCH V4] usb: remove unnecessary CONFIG_PM dependency from USB_OTG

Hi, Nathan Sullivan writes: > The USB OTG support currently depends on power management > (CONFIG_PM) being enabled, but does not actually need it enabled. > Remove this dependency. > > Tested on Bay Trail hardware with dwc3 USB. > > Signed-off-by: Nathan Sullivan

[PATCH] USB: qcserial: Add support for Quectel EC20 Mini PCIe module

It seems like this device has same vendor and product IDs as G2K devices, but it has different number of interfaces(4 vs 5) and also different interface layout which makes it currently unusable: usbcore: registered new interface driver qcserial usbserial: USB Serial support