USB: Use str_enable_disable-like helpers

Replace ternary (condition ? "enable" : "disable") syntax with helpers
from string_choices.h because:
1. Simple function call with one argument is easier to

USB: Use str_enable_disable-like helpers

Replace ternary (condition ? "enable" : "disable") syntax with helpers
from string_choices.h because:
1. Simple function call with one argument is easier to read. Ternary
operator has three arguments and with wrapping might lead to quite
long code.
2. Is slightly shorter thus also easier to read.
3. It brings uniformity in the text - same string.
4. Allows deduping by the linker, which results in a smaller binary
file.

Signed-off-by: Krzysztof Kozlowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

show more ...

usb: chipidea: host: Improve port index sanitizing

Coverity from Synopsys complains "Illegal address computation (OVERRUN)"
on status_reg.

After below code executed,

port_index = wIndex & 0xff;

usb: chipidea: host: Improve port index sanitizing

Coverity from Synopsys complains "Illegal address computation (OVERRUN)"
on status_reg.

After below code executed,

port_index = wIndex & 0xff;
port_index -= (port_index > 0);

the static analysis tool see the value of port_index is now between 0 and
254 (inclusive).

However, ehci_def.h define port_status as below:

#define HCS_N_PORTS_MAX 15
u32 port_status[HCS_N_PORTS_MAX];

So the tool think illegal array pointer may be obtained.

status_reg = &ehci->regs->port_status[port_index];

This will follow "846cbf98cbef USB: EHCI: Improve port index sanitizing" to
improve port index sanitizing.

Signed-off-by: Xu Yang <[email protected]>
Acked-by: Peter Chen <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

show more ...

usb: chipidea: Simplify Tegra DMA alignment code

The USB host on Tegra3 works with 32-bit alignment. Previous code tried
to align the buffer, but it did align the wrapper struct instead, so
the buff

usb: chipidea: Simplify Tegra DMA alignment code

The USB host on Tegra3 works with 32-bit alignment. Previous code tried
to align the buffer, but it did align the wrapper struct instead, so
the buffer was at a constant offset of 8 bytes (two pointers) from
expected alignment. Since kmalloc() guarantees at least 8-byte
alignment already, the alignment-extending is removed.

Fixes: fc53d5279094 ("usb: chipidea: tegra: Support host mode")
Signed-off-by: Michał Mirosław <[email protected]>
Link: https://lore.kernel.org/r/a0d917d492b1f91ee0019e68b8e8bca9c585393f.1695934946.git.mirq-linux@rere.qmqm.pl
Signed-off-by: Greg Kroah-Hartman <[email protected]>

show more ...

usb: chipidea: Fix DMA overwrite for Tegra

Tegra USB controllers seem to issue DMA in full 32-bit words only and thus
may overwrite unevenly-sized buffers. One such occurrence is detected by
SLUB w

usb: chipidea: Fix DMA overwrite for Tegra

Tegra USB controllers seem to issue DMA in full 32-bit words only and thus
may overwrite unevenly-sized buffers. One such occurrence is detected by
SLUB when receiving a reply to a 1-byte buffer (below). Fix this by
allocating a bounce buffer also for buffers with sizes not a multiple of 4.

=============================================================================
BUG kmalloc-64 (Tainted: G B ): kmalloc Redzone overwritten
-----------------------------------------------------------------------------

0x8555cd02-0x8555cd03 @offset=3330. First byte 0x0 instead of 0xcc
Allocated in usb_get_status+0x2b/0xac age=1 cpu=3 pid=41
__kmem_cache_alloc_node+0x12f/0x1e4
__kmalloc+0x33/0x8c
usb_get_status+0x2b/0xac
hub_probe+0x5e9/0xcec
usb_probe_interface+0xbf/0x21c
really_probe+0xa5/0x2c4
__driver_probe_device+0x75/0x174
driver_probe_device+0x31/0x94
__device_attach_driver+0x65/0xc0
bus_for_each_drv+0x4b/0x74
__device_attach+0x69/0x120
bus_probe_device+0x65/0x6c
device_add+0x48b/0x5f8
usb_set_configuration+0x37b/0x6b4
usb_generic_driver_probe+0x37/0x68
usb_probe_device+0x35/0xb4
Slab 0xbf622b80 objects=21 used=18 fp=0x8555cdc0 flags=0x800(slab|zone=0)
Object 0x8555cd00 @offset=3328 fp=0x00000000

Redzone 8555ccc0: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Redzone 8555ccd0: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Redzone 8555cce0: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Redzone 8555ccf0: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Object 8555cd00: 01 00 00 00 cc cc cc cc cc cc cc cc cc cc cc cc ................
Object 8555cd10: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Object 8555cd20: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Object 8555cd30: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................
Redzone 8555cd40: cc cc cc cc ....
Padding 8555cd74: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ
CPU: 3 PID: 41 Comm: kworker/3:1 Tainted: G B 6.6.0-rc1mq-00118-g59786f827ea1 #1115
Hardware name: NVIDIA Tegra SoC (Flattened Device Tree)
Workqueue: usb_hub_wq hub_event
[<8010ca28>] (unwind_backtrace) from [<801090a5>] (show_stack+0x11/0x14)
[<801090a5>] (show_stack) from [<805da2fb>] (dump_stack_lvl+0x4d/0x7c)
[<805da2fb>] (dump_stack_lvl) from [<8026464f>] (check_bytes_and_report+0xb3/0xe4)
[<8026464f>] (check_bytes_and_report) from [<802648e1>] (check_object+0x261/0x290)
[<802648e1>] (check_object) from [<802671b1>] (free_to_partial_list+0x105/0x3f8)
[<802671b1>] (free_to_partial_list) from [<80268613>] (__kmem_cache_free+0x103/0x128)
[<80268613>] (__kmem_cache_free) from [<80425a67>] (usb_get_status+0x73/0xac)
[<80425a67>] (usb_get_status) from [<80421b31>] (hub_probe+0x5e9/0xcec)
[<80421b31>] (hub_probe) from [<80428bbb>] (usb_probe_interface+0xbf/0x21c)
[<80428bbb>] (usb_probe_interface) from [<803ee13d>] (really_probe+0xa5/0x2c4)
[<803ee13d>] (really_probe) from [<803ee3d1>] (__driver_probe_device+0x75/0x174)
[<803ee3d1>] (__driver_probe_device) from [<803ee501>] (driver_probe_device+0x31/0x94)
usb 1-1: device descriptor read/8, error -71

Fixes: fc53d5279094 ("usb: chipidea: tegra: Support host mode")
Signed-off-by: Michał Mirosław <[email protected]>
Link: https://lore.kernel.org/r/ef8466b834c1726f5404c95c3e192e90460146f8.1695934946.git.mirq-linux@rere.qmqm.pl
Signed-off-by: Greg Kroah-Hartman <[email protected]>

show more ...

usb: chipidea: add workaround for chipidea PEC bug

Some NXP processors using ChipIdea USB IP have a bug when frame babble is
detected.

Issue description:
In USB camera test, our controller is host

usb: chipidea: add workaround for chipidea PEC bug

Some NXP processors using ChipIdea USB IP have a bug when frame babble is
detected.

Issue description:
In USB camera test, our controller is host in HS mode. In ISOC IN, when
device sends data across the micro frame, it causes the babble in host
controller. This will clear the PE bit. In spec, it also requires to set
the PEC bit and then set the PCI bit. Without the PCI interrupt, the
software does not know the PE is cleared.

This will add a flag CI_HDRC_HAS_PORTSC_PEC_MISSED to some impacted
platform datas. And the ehci host driver will assert PEC by SW when
specific conditions are satisfied.

Signed-off-by: Xu Yang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

show more ...

usb: chipidea: host: add suspend/resume support for host controller

The controller's power may be powered off during system suspend. This
will add suspend/resume support when the controller suffers

usb: chipidea: host: add suspend/resume support for host controller

The controller's power may be powered off during system suspend. This
will add suspend/resume support when the controller suffers power lost.

Signed-off-by: Xu Yang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

show more ...

usb: chipidea: Add support for VBUS control with PHY

Some platforms make use of VBUS control over PHY which means controller
driver has to access PHY registers to turn on/off VBUS line.This patch
ad

usb: chipidea: Add support for VBUS control with PHY

Some platforms make use of VBUS control over PHY which means controller
driver has to access PHY registers to turn on/off VBUS line.This patch
adds support for such platforms in chipidea.

Flag 'CI_HDRC_PHY_VBUS_CONTROL' added to support VBus control feature.

Acked-by: Peter Chen <[email protected]>
Signed-off-by: Piyush Mehta <[email protected]>
Signed-off-by: Piyush Mehta <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

show more ...

usb: chipidea: host: fix port index underflow and UBSAN complains

If wIndex is 0 (and it often is), these calculations underflow and
UBSAN complains, here resolve this by not decrementing the index

usb: chipidea: host: fix port index underflow and UBSAN complains

If wIndex is 0 (and it often is), these calculations underflow and
UBSAN complains, here resolve this by not decrementing the index when
it is equal to 0, this copies the solution from commit 85e3990bea49
("USB: EHCI: avoid undefined pointer arithmetic and placate UBSAN")

Reported-by: Zhipeng Wang <[email protected]>
Signed-off-by: Li Jun <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Peter Chen <[email protected]>

show more ...

usb: chipidea: tegra: fix flexible_array.cocci warnings

Zero-length and one-element arrays are deprecated, see
Documentation/process/deprecated.rst
Flexible-array members should be used instead.

Ge

usb: chipidea: tegra: fix flexible_array.cocci warnings

Zero-length and one-element arrays are deprecated, see
Documentation/process/deprecated.rst
Flexible-array members should be used instead.

Generated by: scripts/coccinelle/misc/flexible_array.cocci

Fixes: fc53d5279094 ("usb: chipidea: tegra: Support host mode")
CC: Peter Geis <[email protected]>
Reported-by: kernel test robot <[email protected]>
Reviewed-by: Dmitry Osipenko <[email protected]>
Signed-off-by: kernel test robot <[email protected]>
Signed-off-by: Julia Lawall <[email protected]>
Link: https://lore.kernel.org/r/alpine.DEB.2.22.394.2102132108040.2720@hadrien
Signed-off-by: Greg Kroah-Hartman <[email protected]>

show more ...

usb: chipidea: tegra: Support host mode

Add USB host mode to the Tegra HDRC driver. This allows us to benefit from
support provided by the generic ChipIdea driver instead of duplicating the
effort i

usb: chipidea: tegra: Support host mode

Add USB host mode to the Tegra HDRC driver. This allows us to benefit from
support provided by the generic ChipIdea driver instead of duplicating the
effort in a separate ehci-tegra driver.

Tested-by: Matt Merhar <[email protected]>
Tested-by: Nicolas Chauvet <[email protected]>
Tested-by: Ion Agorria <[email protected]>
Acked-by: Thierry Reding <[email protected]>
Acked-by: Peter Chen <[email protected]>
Signed-off-by: Peter Geis <[email protected]>
Signed-off-by: Dmitry Osipenko <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

show more ...

usb: chipidea: host: Disable port power only if previously enabled

On shutdown, ehci_power_off() is called unconditionally to power off
each port, even if it was never called to power on the port.
F

usb: chipidea: host: Disable port power only if previously enabled

On shutdown, ehci_power_off() is called unconditionally to power off
each port, even if it was never called to power on the port.
For chipidea, this results in a call to ehci_ci_portpower() with a request
to power off ports even if the port was never powered on.
This results in the following warning from the regulator code.

WARNING: CPU: 0 PID: 182 at drivers/regulator/core.c:2596 _regulator_disable+0x1a8/0x210
unbalanced disables for usb_otg2_vbus
Modules linked in:
CPU: 0 PID: 182 Comm: init Not tainted 5.4.6 #1
Hardware name: Freescale i.MX7 Dual (Device Tree)
[<c0313658>] (unwind_backtrace) from [<c030d698>] (show_stack+0x10/0x14)
[<c030d698>] (show_stack) from [<c1133afc>] (dump_stack+0xe0/0x10c)
[<c1133afc>] (dump_stack) from [<c0349098>] (__warn+0xf4/0x10c)
[<c0349098>] (__warn) from [<c0349128>] (warn_slowpath_fmt+0x78/0xbc)
[<c0349128>] (warn_slowpath_fmt) from [<c09f36ac>] (_regulator_disable+0x1a8/0x210)
[<c09f36ac>] (_regulator_disable) from [<c09f374c>] (regulator_disable+0x38/0xe8)
[<c09f374c>] (regulator_disable) from [<c0df7bac>] (ehci_ci_portpower+0x38/0xdc)
[<c0df7bac>] (ehci_ci_portpower) from [<c0db4fa4>] (ehci_port_power+0x50/0xa4)
[<c0db4fa4>] (ehci_port_power) from [<c0db5420>] (ehci_silence_controller+0x5c/0xc4)
[<c0db5420>] (ehci_silence_controller) from [<c0db7644>] (ehci_stop+0x3c/0xcc)
[<c0db7644>] (ehci_stop) from [<c0d5bdc4>] (usb_remove_hcd+0xe0/0x19c)
[<c0d5bdc4>] (usb_remove_hcd) from [<c0df7638>] (host_stop+0x38/0xa8)
[<c0df7638>] (host_stop) from [<c0df2f34>] (ci_hdrc_remove+0x44/0xe4)
...

Keeping track of the power enable state avoids the warning and traceback.

Fixes: c8679a2fb8dec ("usb: chipidea: host: add portpower override")
Cc: Michael Grzeschik <[email protected]>
Cc: Peter Chen <[email protected]>
Cc: [email protected]
Signed-off-by: Guenter Roeck <[email protected]>
Acked-by: Peter Chen <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

show more ...

usb: chipidea: host: override ehci->hub_control

The chipidea controller has some special requirements during
suspend/resume, override common ehci->hub_control to implement
it.

Reviewed-by: Frieder

usb: chipidea: host: override ehci->hub_control

The chipidea controller has some special requirements during
suspend/resume, override common ehci->hub_control to implement
it.

Reviewed-by: Frieder Schrempf <[email protected]>
Tested-by: Frieder Schrempf <[email protected]>
Signed-off-by: Peter Chen <[email protected]>

show more ...

usb: chipidea: add flag for imx hsic implementation

NXP (Freecale) imx HSIC design has some special requirements, add
some flags at host code to handle them.

Reviewed-by: Frieder Schrempf <frieder.

usb: chipidea: add flag for imx hsic implementation

NXP (Freecale) imx HSIC design has some special requirements, add
some flags at host code to handle them.

Reviewed-by: Frieder Schrempf <[email protected]>
Tested-by: Frieder Schrempf <[email protected]>
Signed-off-by: Peter Chen <[email protected]>

show more ...

usb: chipidea: Add dynamic pinctrl selection

Some hardware implementations require to configure pins differently
according to the USB role (host/device), this can be an update of the
pins routing or

usb: chipidea: Add dynamic pinctrl selection

Some hardware implementations require to configure pins differently
according to the USB role (host/device), this can be an update of the
pins routing or a simple GPIO value change.

This patch introduces new optional "host" and "device" pinctrls.
If these pinctrls are defined by the device, they are respectively
selected on host/device role start.

If a default pinctrl exist, it is restored on host/device role stop.

Signed-off-by: Loic Poulain <[email protected]>
Signed-off-by: Peter Chen <[email protected]>

show more ...

usb: chipidea: host: fix disconnection detect issue

The commit 4e88d4c08301 ("usb: add a flag to skip PHY
initialization to struct usb_hcd") delete the assignment
for hcd->usb_phy, it causes usb_phy

usb: chipidea: host: fix disconnection detect issue

The commit 4e88d4c08301 ("usb: add a flag to skip PHY
initialization to struct usb_hcd") delete the assignment
for hcd->usb_phy, it causes usb_phy_notify_connect{disconnect)
are not called, the USB PHY driver is not notified of hot plug
event, then the disconnection will not be detected by hardware.

Fixes: 4e88d4c08301 ("usb: add a flag to skip PHY initialization
to struct usb_hcd")
Acked-by: Martin Blumenstingl <[email protected]>
Reported-by: Mats Karrman <[email protected]>
Tested-by: Mats Karrman <[email protected]>
Signed-off-by: Peter Chen <[email protected]>

show more ...

usb: add a flag to skip PHY initialization to struct usb_hcd

The USB HCD core driver parses the device-tree node for "phys" and
"usb-phys" properties. It also manages the power state of these PHYs
a

usb: add a flag to skip PHY initialization to struct usb_hcd

The USB HCD core driver parses the device-tree node for "phys" and
"usb-phys" properties. It also manages the power state of these PHYs
automatically.
However, drivers may opt-out of this behavior by setting "phy" or
"usb_phy" in struct usb_hcd to a non-null value. An example where this
is required is the "Qualcomm USB2 controller", implemented by the
chipidea driver. The hardware requires that the PHY is only powered on
after the "reset completed" event from the controller is received.

A follow-up patch will allow the USB HCD core driver to manage more than
one PHY. Add a new "skip_phy_initialization" bitflag to struct usb_hcd
so drivers can opt-out of any PHY management provided by the USB HCD
core driver.

This also updates the existing drivers so they use the new flag if they
want to opt out of the PHY management provided by the USB HCD core
driver. This means that for these drivers the new "multiple PHY"
handling (which will be added in a follow-up patch) will be disabled as
well.

Signed-off-by: Martin Blumenstingl <[email protected]>
Acked-by: Peter Chen <[email protected]>
Tested-by: Neil Armstrong <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

show more ...

USB: chipidea: Remove redundant license text

Now that the SPDX tag is in all USB files, that identifies the license
in a specific and legally-defined manner. So the extra GPL text wording
can be re

USB: chipidea: Remove redundant license text

Now that the SPDX tag is in all USB files, that identifies the license
in a specific and legally-defined manner. So the extra GPL text wording
can be removed as it is no longer needed at all.

This is done on a quest to remove the 700+ different ways that files in
the kernel describe the GPL license text. And there's unneeded stuff
like the address (sometimes incorrect) for the FSF which is never
needed.

No copyright headers or other non-license-description text was removed.

Cc: Thierry Reding <[email protected]>
Cc: Jonathan Hunter <[email protected]>
Acked-by: Peter Chen <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

show more ...

USB: add SPDX identifiers to all remaining files in drivers/usb/

It's good to have SPDX identifiers in all files to make it easier to
audit the kernel tree for correct licenses.

Update the drivers/

USB: add SPDX identifiers to all remaining files in drivers/usb/

It's good to have SPDX identifiers in all files to make it easier to
audit the kernel tree for correct licenses.

Update the drivers/usb/ and include/linux/usb* files with the correct
SPDX license identifier based on the license text in the file itself.
The SPDX identifier is a legally binding shorthand, which can be used
instead of the full boiler plate text.

This work is based on a script and data from Thomas Gleixner, Philippe
Ombredanne, and Kate Stewart.

Cc: Thomas Gleixner <[email protected]>
Cc: Kate Stewart <[email protected]>
Cc: Philippe Ombredanne <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Acked-by: Felipe Balbi <[email protected]>
Acked-by: Johan Hovold <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

show more ...

usb: chipidea: use bus->sysdev for DMA configuration

Set the dma for chipidea from sysdev. This is inherited from its
parent node. Also, do not set dma mask for child as it is not required
now.

Sig

usb: chipidea: use bus->sysdev for DMA configuration

Set the dma for chipidea from sysdev. This is inherited from its
parent node. Also, do not set dma mask for child as it is not required
now.

Signed-off-by: Arnd Bergmann <[email protected]>
Signed-off-by: Sriram Dash <[email protected]>
Acked-by: Peter Chen <[email protected]>
Signed-off-by: Mathias Nyman <[email protected]>
Signed-off-by: Peter Chen <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

show more ...

usb: chipidea: msm: Handle phy power states

The ULPI phy on qcom platforms needs to be initialized and
powered on after a USB reset and before we toggle the run/stop
bit. Otherwise, the phy locks up

usb: chipidea: msm: Handle phy power states

The ULPI phy on qcom platforms needs to be initialized and
powered on after a USB reset and before we toggle the run/stop
bit. Otherwise, the phy locks up and doesn't work properly. Hook
the phy initialization into the RESET event and the phy power off
into the STOPPED event.

Acked-by: Peter Chen <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>
Signed-off-by: Peter Chen <[email protected]>

show more ...

usb: chipidea: Notify events when switching host mode

The chipidea/udc.c file sends a CI_HDRC_CONTROLLER_RESET_EVENT to
the wrapper drivers when it calls hw_device_reset(), but that
function is not

usb: chipidea: Notify events when switching host mode

The chipidea/udc.c file sends a CI_HDRC_CONTROLLER_RESET_EVENT to
the wrapper drivers when it calls hw_device_reset(), but that
function is not called from chipidea/host.c. And the udc.c file
sends the CI_HDRC_CONTROLLER_STOPPED_EVENT but the host.c file
doesn't do anything.

The intent of the reset event is to allow the wrapper driver to
do any wrapper specific things after the reset bit has been set
in the usb command register. Therefore, add this event hook in
the host role after we toggle that bit.

Similarly, the intent of the stopped event is to allow the
wrapper driver to do any wrapper specific things after the device
is stopped. So when we stop the host role, send the stopped
event.

Acked-by: Peter Chen <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>
Signed-off-by: Peter Chen <[email protected]>

show more ...

usb: chipidea: host: fix NULL ptr dereference during shutdown

After commit b09b5224fe86 ("usb: chipidea: implement platform shutdown
callback") and commit 43a404577a93 ("usb: chipidea: host: set hos

usb: chipidea: host: fix NULL ptr dereference during shutdown

After commit b09b5224fe86 ("usb: chipidea: implement platform shutdown
callback") and commit 43a404577a93 ("usb: chipidea: host: set host to
be null after hcd is freed") a NULL pointer dereference is caused
on i.MX23 during shutdown. So ensure that role is set to CI_ROLE_END and
we finish interrupt handling before the hcd is deallocated. This avoids
the NULL pointer dereference.

Suggested-by: Alan Stern <[email protected]>
Signed-off-by: Stefan Wahren <[email protected]>
Fixes: b09b5224fe86 ("usb: chipidea: implement platform shutdown callback")
Signed-off-by: Peter Chen <[email protected]>

show more ...

usb: chipidea: host: disable io watchdog

The Chipidea EHCI core seems to behave sanely and doesn't need
the IO watchdog. This kills off 10 non-deferrable wakeup events
per second when the controller

usb: chipidea: host: disable io watchdog

The Chipidea EHCI core seems to behave sanely and doesn't need
the IO watchdog. This kills off 10 non-deferrable wakeup events
per second when the controller is otherwise idle.

Signed-off-by: Lucas Stach <[email protected]>
Tested-by: Stefan Agner <[email protected]>
Signed-off-by: Peter Chen <[email protected]>

show more ...

usb: chipidea: host: set host to be null after hcd is freed

Set ci->hcd and ci->otg.host to be null in host_stop since the
hcd already freed.

Signed-off-by: Li Jun <[email protected]>
Signed-off

usb: chipidea: host: set host to be null after hcd is freed

Set ci->hcd and ci->otg.host to be null in host_stop since the
hcd already freed.

Signed-off-by: Li Jun <[email protected]>
Signed-off-by: Peter Chen <[email protected]>

show more ...

usb: chipidea: host: override hcd reset API

The system configuration API should be called before the controller
run, otherwise, undefined results may occur. So, we override hcd
reset API, and add sy

usb: chipidea: host: override hcd reset API

The system configuration API should be called before the controller
run, otherwise, undefined results may occur. So, we override hcd
reset API, and add system configuration API after controller reset.

Cc: Li Jun <[email protected]>
Cc: Alan Stern <[email protected]>
Acked-by: Alan Stern <[email protected]>
Signed-off-by: Peter Chen <[email protected]>

show more ...