Separate the OHCI NXP host controller driver from ohci-hcd
host code so that it can be built as a separate driver module.
This work is part of enabling multi-platform kernels on ARM.
Many place function name and struct name started with usb,
current scenario replaced usb with ohci for proper naming.
Signed-off-by: Manjunath Goudar <manjunath.goudar@linaro.org>
Signed-off-by: Deepak Saxena <dsaxena@linaro.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Separate the W90X900(W90P910) on-chip host controller driver from
ehci-hcd host code so that it can be built as a separate driver module.
This work is part of enabling multi-platform kernels on ARM;
however, note that other changes are still needed before W90X900(W90P910)
can be booted with a multi-platform kernel
and an ehci driver that only works on one of them.
With the infrastructure added by Alan Stern in patch 3e0232039
"USB: EHCI: prepare to make ehci-hcd a library module", we can
avoid this problem by turning a bus glue into a separate
module, as we do here for the w90X900 bus glue.
This patch is rebased on greghk/usb-next 3.12 rc1.
Signed-off-by: Manjunath Goudar <manjunath.goudar@linaro.org>
Signed-off-by: Deepak Saxena <dsaxena@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Wan ZongShun <mcuos.com@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The DCD pin of the serial port can receive a PPS signal. By calling
the port line discipline dcd handle, this patch allow to monitor PPS
through USB serial devices.
However the performance aren't as good as the uart drivers, so
document this point too.
Signed-off-by: Paul Chavent <paul.chavent@onera.fr>
Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When the device receive a DCD status change, forward the signal to the
USB serial system. This way, we can detect, for instance, PPS pulses.
Signed-off-by: Paul Chavent <paul.chavent@onera.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If we supply a con_id then the clock framework will search for that name
in MUSB's Device Tree node for the 'clock-names' property. If it's absent
the clock request will fail. However, if we don't supply the con_id then
clk_get() will call into clk_sys() which will use the device name to
search for the appropriate clock, which is much more natural than forcing
'usb'.
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
From Kukjin Kim:
Add device tree support for S3C64XX
- add device tree infrastructure for s3c64xx
- add DT SoC file for s3c64xx
- add DT board file for FriendlyARM Mini6410 board
- add DT board file for SAMSUNG SMDK6410
Based on Common Clk Framework for S3C64XX
* tag 'samsung-dt-s3c64xx' of http://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: dts: Add dts file for S3C6410-based SMDK6410 board
ARM: dts: Add dts file for S3C6410-based Mini6410 board
ARM: dts: Add basic dts include files for Samsung S3C64xx SoCs
ARM: S3C64XX: Add board file for boot using Device Tree
gpio: samsung: Skip initialization if device tree is present
ARM: S3C64XX: Bypass legacy initialization when booting with DT
irqchip: vic: Parse interrupt and resume masks from device tree
ARM: S3C64XX: Remove old clock management code
ARM: S3C64XX: Migrate clock handling to Common Clock Framework
usb: ohci-s3c2410.c: Use clk_prepare_enable/clk_disable_unprepare
ARM: S3C64XX: Use clk_prepare_enable/clk_disable_unprepare in dma.c
ARM: SAMSUNG: Add soc_is_s3c6400/s3c6410 macros
Signed-off-by: Olof Johansson <olof@lixom.net>
From Kukjin Kim:
Common clk support for S3C64XX
- add PLL for S3C64XX
- add s3c64xx clock driver
- update drivers to use CCF of s3c64xx
* tag 'samsung-clk-s3c64xx' of http://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: S3C64XX: Remove old clock management code
ARM: S3C64XX: Migrate clock handling to Common Clock Framework
usb: ohci-s3c2410.c: Use clk_prepare_enable/clk_disable_unprepare
ARM: S3C64XX: Use clk_prepare_enable/clk_disable_unprepare in dma.c
ARM: SAMSUNG: Add soc_is_s3c6400/s3c6410 macros
Signed-off-by: Olof Johansson <olof@lixom.net>
Trying to read data from the Pegasus Technologies NoteTaker (0e20:0101)
[1] with the Windows App (EasyNote) works natively but fails when
Windows is running under KVM (and the USB device handed to KVM).
The reason is a USB control message
usb 4-2.2: control urb: bRequestType=22 bRequest=09 wValue=0200 wIndex=0001 wLength=0008
This goes to endpoint address 0x01 (wIndex); however, endpoint address
0x01 does not exist. There is an endpoint 0x81 though (same number,
but other direction); the app may have meant that endpoint instead.
The kernel thus rejects the IO and thus we see the failure.
Apparently, Linux is more strict here than Windows ... we can't change
the Win app easily, so that's a problem.
It seems that the Win app/driver is buggy here and the driver does not
behave fully according to the USB HID class spec that it claims to
belong to. The device seems to happily deal with that though (and
seems to not really care about this value much).
So the question is whether the Linux kernel should filter here.
Rejecting has the risk that somewhat non-compliant userspace apps/
drivers (most likely in a virtual machine) are prevented from working.
Not rejecting has the risk of confusing an overly sensitive device with
such a transfer. Given the fact that Windows does not filter it makes
this risk rather small though.
The patch makes the kernel more tolerant: If the endpoint address in
wIndex does not exist, but an endpoint with toggled direction bit does,
it will let the transfer through. (It does NOT change the message.)
With attached patch, the app in Windows in KVM works.
usb 4-2.2: check_ctrlrecip: process 13073 (qemu-kvm) requesting ep 01 but needs 81
I suspect this will mostly affect apps in virtual environments; as on
Linux the apps would have been adapted to the stricter handling of the
kernel. I have done that for mine[2].
[1] http://www.pegatech.com/
[2] https://sourceforge.net/projects/notetakerpen/
Signed-off-by: Kurt Garloff <kurt@garloff.de>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If NO_DMA=y:
drivers/built-in.o: In function `dma_set_coherent_mask':
include/linux/dma-mapping.h:93: undefined reference to `dma_supported'
Reviewed-and-tested-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is a pending TD which is not freed after request finishes,
we do this due to a controller bug. This TD needs to be freed when
the driver is removed. It prints below error message when unload
chipidea driver at current code:
"ci_hdrc ci_hdrc.0: dma_pool_destroy ci_hw_td, b0001000 busy"
It indicates the buffer at dma pool are still in use.
This commit will free the pending TD at driver's removal procedure,
it can fix the problem described above.
Acked-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If not, the PHY will be active even the controller is not in use.
We find this issue due to the PHY's clock refcount is not correct
due to -EPROBE_DEFER return after phy's init.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch straightens out some locking issues in the USB sysfs
interface:
Deauthorization will destroy existing configurations.
Attributes that read from udev->actconfig need to lock the
device to prevent races. Likewise for the rawdescriptor
values.
Attributes that access an interface's current alternate
setting should use ACCESS_ONCE() to obtain the cur_altsetting
pointer, to protect against concurrent altsetting changes.
The supports_autosuspend() attribute routine accesses values
from an interface's driver, so it should lock the interface
(rather than the usb_device) to protect against concurrent
unbinds. Once this is done, the routine can be simplified
considerably.
Scalar values that are stored directly in the usb_device structure are
always available. They do not require any locking. The same is true
of the cached interface string descriptor, because it is not
deallocated until the usb_host_interface structure is destroyed.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When transfer type is isochronous, the other bits (bits 5..2) of
bmAttributes in endpoint descriptor might not be set zero. So it's better
to use usb_endpoint_type routine to mask bmAttributes with
USB_ENDPOINT_XFERTYPE_MASK to judge the transfter type later.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The following patch is required to resolve remote wake issues with
certain devices.
Issue description:
If the remote wake is issued from the device in a specific timing
condition while the system is entering sleep state then it may cause
system to auto wake on subsequent sleep cycle.
Root cause:
Host controller rebroadcasts the Resume signal > 100 µseconds after
receiving the original resume event from the device. For proper
function, some devices may require the rebroadcast of resume event
within the USB spec of 100µS.
Workaroud:
1. Filter the AMD platforms with Yangtze chipset, then judge of all the usb
devices are mouse or not. And get out the port id which attached a mouse
with Pixart controller.
2. Then reset the port which attached issue device during system resume
from S3.
[Q] Why the special devices are only mice? Would high speed devices
such as 3G modem or USB Bluetooth adapter trigger this issue?
- Current this sensitivity is only confined to devices that use Pixart
controllers. This controller is designed for use with LS mouse
devices only. We have not observed any other devices failing. There
may be a small risk for other devices also but this patch (reset
device in resume phase) will cover the cases if required.
[Q] Shouldn’t the resume signal be sent within 100 us for every
device?
- The Host controller may not send the resume signal within 100us,
this our host controller specification change. This is why we
require the patch to prevent side effects on certain known devices.
[Q] Why would clicking mouse INTENSELY to wake the system up trigger
this issue?
- This behavior is specific to the devices that use Pixart controller.
It is timing dependent on when the resume event is triggered during
the sleep state.
[Q] Is it a host controller issue or mouse?
- It is the host controller behavior during resume that triggers the
device incorrect behavior on the next resume.
This patch sets USB_QUIRK_RESET_RESUME flag for these Pixart-based mice
when they attached to platforms with AMD Yangtze chipset.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Suggested-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch abstracts out a AMD chipset type which includes southbridge
generation and its revision. When os excutes usb_amd_find_chipset_info
routine to initialize AMD chipset type, driver will know which kind of
chipset is used.
This update has below benifits:
- Driver is able to confirm which southbridge generations and their
revision are used, with chipset detection once.
- To describe chipset generations with enumeration types brings better
readability.
- It's flexible to filter AMD platforms to implement new quirks in future.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Cc: Andiry Xu <andiry.xu@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Like vbus, the dr_mode and phy_mode are also got from glue layer's
platform data or device node.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The udc-core will call gadget's driver->disconnect, so we should avoid
calling gadget's disconnect again at ci_udc_stop in case the gadget's
unbind free some structs which is still used at gadget's disconnect.
Tested-by: Marek Vasut <marex@denx.de>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is a pending TD which is not freed after request finishes,
we do this due to a controller bug. This TD needs to be freed when
the driver is removed. It prints below error message when unload
chipidea driver at current code:
"ci_hdrc ci_hdrc.0: dma_pool_destroy ci_hw_td, b0001000 busy"
It indicates the buffer at dma pool are still in use.
This commit will free the pending TD at driver's removal procedure,
it can fix the problem described above.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Support for specifying soft dependencies in the modules themselves was
introduced in commit 7cb14ba.
In Arch we have always been shipping a module.d(5) fragment ordering ohci/uhci
after ehci. If this ordering is really necessary, it would be great to move it
to the kernel and getting the correct fragment generated by depmod.
Signed-off-by: Tom Gundersen <teg@jklm.no>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Since uhci-hcd, ehci-hcd, and xhci-hcd support runtime PM, the .pm
field in their pci_driver structures should be protected by CONFIG_PM
rather than CONFIG_PM_SLEEP. The corresponding change has already
been made for ohci-hcd.
Without this change, controllers won't do runtime suspend if system
suspend or hibernation isn't enabled.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Sarah Sharp <sarah.a.sharp@linux.intel.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit 24f531371d (USB: EHCI: accept very late isochronous URBs)
changed the isochronous API provided by ehci-hcd. URBs submitted too
late, so that the time slots for all their packets have already
expired, are no longer rejected outright. Instead the submission is
accepted, and the URB completes normally with a -EXDEV error for each
packet. This is what client drivers expect.
This patch implements the same policy in ohci-hcd. The change is more
complicated than it was in ehci-hcd, because ohci-hcd doesn't scan for
isochronous completions in the same way as ehci-hcd does. Rather, it
depends on the hardware adding completed TDs to a "done queue". Some
OHCI controller don't handle this properly when a TD's time slot has
already expired, so we have to avoid adding such TDs to the schedule
in the first place. As a result, if the URB was submitted too late
then none of its TDs will get put on the schedule, so none of them
will end up on the done queue, so the driver will never realize that
the URB should be completed.
To solve this problem, the patch adds one to urb_priv->td_cnt for such
URBs, making it larger than urb_priv->length (td_cnt already gets set
to the number of TD's that had to be skipped because their slots have
expired). Each time an URB is given back, the finish_urb() routine
looks to see if urb_priv->td_cnt for the next URB on the same endpoint
is marked in this way. If so, it gives back the next URB right away.
This should be applied to all kernels containing commit 815fa7b917
(USB: OHCI: fix logic for scheduling isochronous URBs).
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit 24f531371d (USB: EHCI: accept very late isochronous URBs)
changed the isochronous API provided by ehci-hcd. URBs submitted too
late, so that the time slots for all their packets have already
expired, are no longer rejected outright. Instead the submission is
accepted, and the URB completes normally with a -EXDEV error for each
packet. This is what client drivers expect.
This patch implements the same policy in uhci-hcd. It should be
applied to all kernels containing commit c44b225077 (UHCI: implement
new semantics for URB_ISO_ASAP).
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit 24f531371d (USB: EHCI: accept very late isochronous URBs)
changed the isochronous API provided by ehci-hcd. URBs submitted too
late, so that the time slots for all their packets have already
expired, are no longer rejected outright. Instead the submission is
accepted, and the URB completes normally with a -EXDEV error for each
packet. This is what client drivers expect.
The same policy should be implemented in imx21-hcd, but I don't know
enough about the hardware to do it. As a second-best substitute, this
patch treats very late isochronous submissions as though the
URB_ISO_ASAP flag were set. I don't have any way to test this change,
unfortunately.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Sascha Hauer <kernel@pengutronix.de>
CC: Martin Fuzzey <mfuzzey@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In gadget mode, musb->is_active should be set only when connected to the
host. musb_g_reset() already takes care of it.
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Set SEL control urbs cannot be sent to a device in unconfigured state.
This patch adds a check in usb_req_set_sel() to ensure the usb device's
state is USB_STATE_CONFIGURED.
Signed-off-by: Xenia Ragiadakou <burzalodowa@gmail.com>
Reported-by: Martin MOKREJS <mmokrejs@gmail.com>
Suggested-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
The halted state of a endpoint cannot be cleared over CLEAR_HALT from a
user process, because the stopped_td variable was overwritten in the
handle_stopped_endpoint() function. So the xhci_endpoint_reset() function will
refuse the reset and communication with device can not run over this endpoint.
https://bugzilla.kernel.org/show_bug.cgi?id=60699
Signed-off-by: Florian Wolter <wolly84@web.de>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
When a device signals remote wakeup on a roothub, and the suspend change
bit is set, the host controller driver must not give control back to the
USB core until the port goes back into the active state.
EHCI accomplishes this by waiting in the get port status function until
the PORT_RESUME bit is cleared:
/* stop resume signaling */
temp &= ~(PORT_RWC_BITS | PORT_SUSPEND | PORT_RESUME);
ehci_writel(ehci, temp, status_reg);
clear_bit(wIndex, &ehci->resuming_ports);
retval = ehci_handshake(ehci, status_reg,
PORT_RESUME, 0, 2000 /* 2msec */);
Similarly, the xHCI host should wait until the port goes into U0, before
passing control up to the USB core. When the port transitions from the
RExit state to U0, the xHCI driver will get a port status change event.
We need to wait for that event before passing control up to the USB
core.
After the port transitions to the active state, the USB core should time
a recovery interval before it talks to the device. The length of that
recovery interval is TRSMRCY, 10 ms, mentioned in the USB 2.0 spec,
section 7.1.7.7. The previous xHCI code (which did not wait for the
port to go into U0) would cause the USB core to violate that recovery
interval.
This bug caused numerous USB device disconnects on remote wakeup under
ChromeOS and a Lynx Point LP xHCI host that takes up to 20 ms to move
from RExit to U0. ChromeOS is very aggressive about power savings, and
sets the autosuspend_delay to 100 ms, and disables USB persist.
I attempted to replicate this bug with Ubuntu 12.04, but could not. I
used Ubuntu 12.04 on the same platform, with the same BIOS that the bug
was triggered on ChromeOS with. I also changed the USB sysfs settings
as described above, but still could not reproduce the bug under Ubuntu.
It may be that ChromeOS userspace triggers this bug through additional
settings.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
If a command on the command ring needs to be cancelled before it is handled
it can be turned to a no-op operation when the ring is stopped.
We want to store the command ring enqueue pointer in the command structure
when the command in enqueued for the cancellation case.
Some commands used to store the command ring dequeue pointers instead of enqueue
(these often worked because enqueue happends to equal dequeue quite often)
Other commands correctly used the enqueue pointer but did not check if it pointed
to a valid trb or a link trb, this caused for example stop endpoint command to timeout in
xhci_stop_device() in about 2% of suspend/resume cases.
This should also solve some weird behavior happening in command cancellation cases.
This patch is based on a patch submitted by Sarah Sharp to linux-usb, but
then forgotten:
http://marc.info/?l=linux-usb&m=136269803207465&w=2
This patch should be backported to kernels as old as 3.7, that contain
the commit b92cc66c04 "xHCI: add aborting
command ring function"
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@vger.kernel.org
When a command times out, the command ring is first aborted,
and then stopped. If the command ring is empty when it is stopped
the stop event will point to next command which is not yet set.
xHCI tries to handle this next event often causing an oops.
Don't handle command completion events on stopped cmd ring if ring is
empty.
This patch should be backported to kernels as old as 3.7, that contain
the commit b92cc66c04 "xHCI: add aborting
command ring function"
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Reported-by: Giovanni <giovanni.nervi@yahoo.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@vger.kernel.org
We have USB fixes now in Linus's tree that we need to properly sort out
with reverts and the like in the usb-next branch, so merge them together
and do it by hand.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Move probe out of __init section and don't use platform_driver_probe
which cannot be used with deferred probing.
Since commit e9354576 ("gpiolib: Defer failed gpio requests by default")
and 04bf3011 ("regulator: Support driver probe deferral") this driver
might return -EPROBE_DEFER if a gpio_request or regulator_get fails.
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Move probe out of __init section and don't use platform_driver_probe
which cannot be used with deferred probing.
Since commit e9354576 ("gpiolib: Defer failed gpio requests by default")
this driver might return -EPROBE_DEFER if a gpio_request fails.
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Felipe writes:
usb: fixes for v3.12-rc2
Here's first set of fixes for v3.12-rc series, patches have
been soaking in linux-usb for a while now.
We have the usual sparse and build warnings, a Kconfig fix
to a mismerge on dwc3 Kconfig, fix for a possible memory leak
in dwc3, s3c-hsotg won't disconnect when bus goes idle, locking
fix in mv_u3d_core, endpoint disable fix in f_mass_storage.
We also have one device ID added to dwc3's PCI glue layer in order
to support Intel's BayTrail devices.
Signed-of-by: Felipe Balbi <balbi@ti.com>
Right after the musb_hdrc driver is loaded, the otg default state
is a_idle, and Mode=Host, which are set by musb_host_setup().
This causes the following kernel message during musb gadget
enumeration.
CAUTION: musb: Babble Interrupt Occurred
This patch sets the otg default state to b_idle, and its Mode to
Peripheral.
It has been validated on TI AM335x GP EVM USB0 port with g_zero.
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Urb fields are stored in struct usbdevfs_ctrltransfer in CPU byteorder
and not in little endian, so there is no need to be converted.
This bug was reported by sparse.
Signed-off-by: Xenia Ragiadakou <burzalodowa@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In the bos usb_ss_cap_descriptor structure, bU2DevExitLat is of type __le16.
This value is used as it is, without being first converted to the CPU
byteorder, for the setup of usb device's usb3_lpm_parameters.
This patch fixes that by converting bU2DevExitLat field to the CPU byteorder
before the assignmenment to [udev/hub]_u2_del variables.
Signed-off-by: Xenia Ragiadakou <burzalodowa@gmail.com>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
