Drop two redundant NULL checks from usb_serial_console_disconnect().
The usb_serial_console_disconnect function is called from the
USB-serial-device disconnect callback when a device is going away. Hence
there is no need to check for the serial-device pointer being NULL.
The serial-device port pointers are stored in an array that is a member
of the serial struct so the address of the first member of the array
(which the array name decays to) is never NULL either.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Since commit 4a51096937 ("tty: Make tty_files_lock per-tty") a new
tty_struct spin lock is taken in the tty release path, but the
USB-serial-console hack was never updated hence leaving the lock of its
"fake" tty uninitialised. This was eventually detected by lockdep.
Make sure to initialise the new lock also for the fake tty to address
this regression.
Yes, this code is a mess, but cleaning it up is left for another day.
Fixes: 4a51096937 ("tty: Make tty_files_lock per-tty")
Cc: stable <stable@vger.kernel.org> # 4.6
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
No need to reinitialise the interrupt-in URB with values that have not
changed before (some) resubmissions.
This also allows the interrupt-in callback to have a single path for URB
resubmission.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Drop redundant URB unlink as there's no need to unlink an URB which is
about to be killed synchronously.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Make the reference clock optional for DTS backward compatibility
and ignore the error if it does not exist.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Make the reference clock optional for DTS backward compatibility
and ignore the error if it does not exist.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The condition modex % 16 cannot be true when modex value is equal to 640
The condition du & 0xff cannot be true when du value is equal to 0x1400
Addresses-Coverity-Id: 101163
Addresses-Coverity-Id: 744373
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove this line of code because devnum is overwritten before it can be used.
This could happen if line of code 609 (goto try_again;) is executed. Otherwise,
devnum is never used again.
Addresses-Coverity-ID: 1226870
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Interface numbers do not change when enabling alternate settings as
comment and code in this driver suggested.
Remove the confusing comment and redundant retrieval of the interface
number in probe, while simplifying and renaming the interface-number
helper.
Fixes: 4db2299da2 ("sierra: driver interface blacklisting")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
FTDI devices use a receive latency timer to periodically empty the
receive buffer and report modem and line status (also when the buffer is
empty).
When a break or error condition is detected the corresponding status
flags will be set on a packet with nonzero data payload and the flags
are not updated until the break is over or further characters are
received.
In order to avoid over-reporting break and error conditions, these flags
must therefore only be processed for packets with payload.
This specifically fixes the case where after an overrun, the error
condition is continuously reported and NULL-characters inserted until
further data is received.
Reported-by: Michael Walle <michael@walle.cc>
Fixes: 72fda3ca6f ("USB: serial: ftd_sio: implement sysrq handling on
break")
Fixes: 166ceb6907 ("USB: ftdi_sio: clean up line-status handling")
Cc: stable <stable@vger.kernel.org> # v2.6.35
Signed-off-by: Johan Hovold <johan@kernel.org>
Add new USB IDs for cp2104/5 devices on Bx50v3 boards due to the design
change.
Signed-off-by: Ken Lin <yungching0725@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
In this series, it adds qualcomm USB2 support. The review process takes
more than half of year, thanks for Stephen Boyd's great work.
Most of patches at linux-next more than ten days, and the last two small
chipidea patches at my tree about one day, no warning is reported from
autobuild robot.
Thanks.
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Merge tag 'usb-ci-v4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next
Peter writes:
Hi Greg,
In this series, it adds qualcomm USB2 support. The review process takes
more than half of year, thanks for Stephen Boyd's great work.
Most of patches at linux-next more than ten days, and the last two small
chipidea patches at my tree about one day, no warning is reported from
autobuild robot.
Thanks.
One more device ID for pl2303.
Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-4.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB-serial fixes for v4.10-rc7
One more device ID for pl2303.
Signed-off-by: Johan Hovold <johan@kernel.org>
Fixes the following sparse warning:
drivers/usb/musb/musb_dsps.c:270:6: warning:
symbol 'dsps_musb_clear_ep_rxintr' was not declared. Should it be static?
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Allwinner H3/V3s features a variant of MUSB controller, which lacks one
endpoint.
Add support for it.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
[b-liu@ti.com: added usb: to commit subject prefix]
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Declare dev_pm_ops structures as const as they are only stored in the pm
field of a device_driver structure. This field is of type const, so
dev_pm_ops structures having similar properties can be declared const
too.
Size details after cross compiling the .o file for arm
architecture.
File size before: drivers/usb/musb/omap2430.o
text data bss dec hex filename
4141 400 8 4549 11c5 usb/musb/omap2430.o
File size after: drivers/usb/musb/omap2430.o
text data bss dec hex filename
4333 200 8 4541 11bd usb/musb/omap2430.o
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
[b-liu@ti.com: added omap2430 in commit subject prefix]
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We can now configure the PMIC interrupt to provide us VBUS
events. In that case we don't need to constantly poll the
status and can make it optional. This is only wired up
for the mini-B interface on beaglebone.
Note that eventually we should get also the connect status
for the host interface when the am335x internal PM coprocessor
provides us with an IRQ chip. For now, we still need to poll
for the host mode status.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When CONFIG_PM_SLEEP is disabled, SIMPLE_DEV_PM_OPS does not use
bfin_resume and bfin_suspend even if CONFIG_PM is enabled:
drivers/usb/musb/blackfin.c:602:12: warning: ‘bfin_resume’ defined but
not used [-Wunused-function]
static int bfin_resume(struct device *dev)
^~~~~~~~~~~
drivers/usb/musb/blackfin.c:585:12: warning: ‘bfin_suspend’ defined but
not used [-Wunused-function]
static int bfin_suspend(struct device *dev)
^~~~~~~~~~~~
The preprocessor condition should be on CONFIG_PM_SLEEP, not on CONFIG_PM.
However it is better to mark these functions as __maybe_unused.
Signed-off-by: Jérémy Lefaure <jeremy.lefaure@lse.epita.fr>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The dsps glue uses PLATFORM_DEVID_AUTO when creating the musb-hdrc
platform devices, this causes that the id will change in each system
depending on the order of driver probe, the order of the usb instances
defined in device-tree, or the list of enabled devices which use also
PLATFORM_DEVID_AUTO in kernel config. This id inconsistency causes
trouble in shell scripting or user guide documentation.
So switch it to static id, starting from 0 to the musb instance with
lower MMR offset. This scheme is also aligned to the naming in the SoC.
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Based on the musb ug, force_host bit is allowed to be set along with
force_hs or force_fs bit.
It could help to implement forced host mode via testmode on Nokia N900.
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch just uses the resource-managed extcon API when registering
the extcon notifier.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
On da8xx, VBUS is not maintained during suspend when musb is in host mode.
On resume, all the connected devices will be disconnected and then will
be enumerated again.
This happens because MUSB_DEVCTL is cleared during suspend.
Use the quirk MUSB_PRESERVE_SESSION to preseve MUSB_DEVCTL during suspend.
Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
On da8xx, VBUS is not maintained during suspend when musb is in host mode.
On resume, all the connected devices will be disconnected and then will
be enumerated again.
This happens because MUSB_DEVCTL is cleared during suspend.
Add a quirk to not clear MUSB_DEVCTL and then preserve the session during
a suspend.
Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Implement PM methods specifics for da8xx glue.
The only thing to do is to power off the phy.
As the registers are in retention during suspend,
there is no need to save them.
Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The session is cleared in the core whenever musb_platform_disable() is
called, so clearing it in the glue driver *_musb_disable() is redundant.
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The session is cleared in the core whenever musb_platform_disable() is
called, so clearing it in the glue driver *_musb_disable() is redundant.
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The session is cleared in the core whenever musb_platform_disable() is
called, so clearing it in the glue driver *_musb_disable() is redundant.
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The session is cleared in the core whenever musb_platform_disable() is
called, so clearing it in the glue driver *_musb_disable() is redundant.
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
musb_generic_disable() only has two lines of code. So remove it and let
the callers directly call those two lines.
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
DA8xx driver is registering and using the CPPI 3.0 DMA controller but
actually, the DA8xx has a CPPI 4.1 DMA controller.
Remove the CPPI 3.0 quirk and methods.
Fixes: f8e9f34f80 ("usb: musb: Fix up DMA related macros")
Fixes: 7f6283ed6f ("usb: musb: Set up function pointers for DMA")
Cc: <stable@vger.kernel.org>
Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The 2nd check for a non-zero return from copy_to_user is redundant as
it is has already been made a few lines earlier. This check was made
redundant because of previous fix to the copy_to_user error return
check.
Detected by CoverityScan, CID#114347 ("Logically Dead Code")
Fixes: 1865a9c382 ("USB: adutux: fix misuse of return value of copy_to_user()")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().
Fixes: 2fc305be36 ("usb: chipidea: msm: Mux over secondary phy at the
right time")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Stephen Boyd <stephen.boyd@linaro.org>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
When the qcom chipidea controller is used with an extcon, we need
to signal device mode or host mode to the phy so it can configure
itself for the correct mode. This should be done after the phy is
powered up, so that the register writes work correctly. Add in
the appropriate phy_set_mode() call here.
Cc: Peter Chen <peter.chen@nxp.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Make sure to check for short transfers before parsing the receive buffer
to avoid acting on stale data.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Make sure the received data has the required headers before parsing it.
Also drop the redundant urb-status check, which has already been handled
by the caller.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Make sure to check for short transfers to avoid underflow in a loop
condition when parsing the receive buffer.
Also fix an off-by-one error in the incomplete sanity check which could
lead to invalid data being parsed.
Fixes: 8c209e6782 ("USB: make actual_length in struct urb field u32")
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org> # v2.6.30
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Seems that ATEN serial-to-usb devices using pl2303 exist with
different device ids. This patch adds a missing device ID so it
is recognised by the driver.
Signed-off-by: Marcel J.E. Mol <marcel@mesa.nl>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Use the port device rather than usb device in info and error messages.
This makes sure that driver and tty port is included in the messages,
while also making them more uniform.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Remove redundant check of num_interrupt_in which has already been
verified in probe (killing a NULL-urb would also have been fine).
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Return -ENODEV rather than -EINVAL on probe errors due to a missing
endpoint.
Also clean up the endpoint sanity check somewhat and use the interface
device for logging a more compact error in case an expected endpoint is
missing.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Just a couple of new device ids.
Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-4.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB-serial fixes for v4.10-rc6
Just a couple of new device ids.
Signed-off-by: Johan Hovold <johan@kernel.org>
The driver reports that it always uses a low-latency mode by returning
the ASYNC_LOW_LATENCY flag through TIOCGSERIAL.
Even if this behaviour could not be changed, this may have made some
sense prior to 7a9a65ced1 ("cdc-acm: Fix long standing abuse of
tty->low_latency") which removed the unconditional setting of the
corresponding tty low_latency flag (something which had always been
broken in itself).
Since the driver does not have a low-latency mode, let's drop the flag.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here's the big pull request for the Gadget
API. Again the majority of changes sit in dwc2
driver. Most important changes contain a workaround
for GOTGCTL being wrong, a sleep-inside-spinlock fix
and the big series of cleanups on dwc2.
One important thing on dwc3 is that we don't anymore
need gadget drivers to cope with unaligned OUT
transfers for us. We have support for appending one
extra chained TRB to align transfer ourselves.
Apart from these, the usual set of typos,
non-critical fixes, etc.
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Merge tag 'usb-for-v4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
USB: changes for v4.11
Here's the big pull request for the Gadget
API. Again the majority of changes sit in dwc2
driver. Most important changes contain a workaround
for GOTGCTL being wrong, a sleep-inside-spinlock fix
and the big series of cleanups on dwc2.
One important thing on dwc3 is that we don't anymore
need gadget drivers to cope with unaligned OUT
transfers for us. We have support for appending one
extra chained TRB to align transfer ourselves.
Apart from these, the usual set of typos,
non-critical fixes, etc.
Currently we already have two pin configuration related callbacks
available for GPIO chips .set_single_ended() and .set_debounce(). In
future we expect to have even more, which does not scale well if we need
to add yet another callback to the GPIO chip structure for each possible
configuration parameter.
Better solution is to reuse what we already have available in the
generic pinconf.
To support this, we introduce a new .set_config() callback for GPIO
chips. The callback takes a single packed pin configuration value as
parameter. This can then be extended easily beyond what is currently
supported by just adding new types to the generic pinconf enum.
If the GPIO driver is backed up by a pinctrl driver the GPIO driver can
just assign gpiochip_generic_config() (introduced in this patch) to
.set_config and that will take care configuration requests are directed
to the pinctrl driver.
We then convert the existing drivers over .set_config() and finally
remove the .set_single_ended() and .set_debounce() callbacks.
Suggested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The adaptor can be found on development boards for 78k, RL78 and V850
microcontrollers produced by Renesas Electronics Corporation.
This is not a full-featured USB to serial converter, however it allows
basic communication and simple control which is enough for programming of
on-board flash and debugging through a debug monitor.
uPD78F0730 is a USB-enabled microcontroller with USB-to-UART conversion
implemented in firmware.
This chip is also present in some debugging adaptors which use it for
USB-to-SPI conversion as well. The present driver doesn't cover SPI,
only USB-to-UART conversion is supported.
Signed-off-by: Maksim Salau <maksim.salau@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
dwc3 revisions <=3.00a have a limitation where Port Disable command
doesn't work. Set the quirk-broken-port-ped property for such
controllers so XHCI core can do the necessary workaround.
[rogerq@ti.com] Updated code from platform data to device property.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
