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2022-10-07Merge tag 'usb-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usbLinus Torvalds1-253/+232
Pull USB / Thunderbolt updates from Greg KH: "Here is the big set of USB and Thunderbolt driver changes for 6.1-rc1. Nothing major in here, lots of little things with new devices supported and updates for a few drivers. Highlights include: - thunderbolt/USB4 devices supported a bit better than before, and some new ids to enable new hardware devices - USB gadget uvc updates for newer video formats and better v4l integration (the v4l portions were acked by those maintainers) - typec updates for tiny issues and more typec drivers for new chips. - xhci tiny updates for minor issues - big usb-serial ftdi_sio driver update to handle new devices better - lots of tiny dwc3 fixes and updates for the IP block that is showing up everywhere these days - dts updates for new devices being supported - other tiny janitorial and cleanups fixes for lots of different USB drivers. Full details are in the shortlog. All of these have been in linux-next for a while with no reported issues" * tag 'usb-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (169 commits) usb: gadget: uvc: don't put item still in use usb: gadget: uvc: Fix argument to sizeof() in uvc_register_video() usb: host: ehci-exynos: switch to using gpiod API Revert "usb: dwc3: Don't switch OTG -> peripheral if extcon is present" Revert "USB: fixup for merge issue with "usb: dwc3: Don't switch OTG -> peripheral if extcon is present"" dt-bindings: usb: Convert FOTG210 to dt schema usb: mtu3: fix failed runtime suspend in host only mode USB: omap_udc: Fix spelling mistake: "tranceiver_ctrl" -> "transceiver_ctrl" usb: typec: ucsi_ccg: Disable UCSI ALT support on Tegra usb: typec: Replace custom implementation of device_match_fwnode() usb: typec: ucsi: Don't warn on probe deferral usb: add quirks for Lenovo OneLink+ Dock MAINTAINERS: switch dwc3 to Thinh usb: idmouse: fix an uninit-value in idmouse_open USB: PHY: JZ4770: Switch to use dev_err_probe() helper usb: phy: generic: Switch to use dev_err_probe() helper usb: ulpi: use DEFINE_SHOW_ATTRIBUTE to simplify ulpi_regs usb: cdns3: remove dead code usb: cdc-wdm: Use skb_put_data() instead of skb_put/memcpy pair usb: musb: sunxi: Switch to use dev_err_probe() helper ...
2022-09-20USB: serial: ftdi_sio: clean up driver prefixJohan Hovold1-21/+17
Drop the "sio" infix from the few remaining definitions and symbol names that still had it. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2022-09-20USB: serial: ftdi_sio: move driver structureJohan Hovold1-66/+35
Move the definition of the USB serial driver structure to the end of the file where it is used and drop the now redundant forward declarations. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2022-09-20USB: serial: ftdi_sio: clean up attribute visibility logicJohan Hovold1-8/+7
Clean up the attribute visibility logic by defaulting to attributes being visible and explicitly listing the exceptions. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2022-09-19USB: serial: ftdi_sio: convert to use dev_groupsJiasheng Jiang1-21/+28
The driver core supports the ability to handle the creation and removal of device-specific sysfs files in a race-free manner. Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> [ johan: rebase on type rework, make groups static, clean up, amend commit message ] Signed-off-by: Johan Hovold <johan@kernel.org>
2022-09-15USB: serial: ftdi_sio: add support for HP and HA devicesAmireddy mallikarjuna reddy1-0/+42
Add the product IDs for the USB-to-Serial devices FT2233HP, FT2232HP, FT4233HP, FT4232HP, FT233HP, FT232HP, and FT4232HA. Also include BCD values so that the chip type can be determined. Signed-off-by: Amireddy mallikarjuna reddy <mallikarjuna.reddy@ftdichip.com> Link: https://lore.kernel.org/r/ac28f2c5eba23a645b3b9299c224f2755a233eef.1658385786.git.mallikarjuna.reddy@ftdichip.com [ johan: rebase on type-handling rework, drop "Q" from automotive type name ] Signed-off-by: Johan Hovold <johan@kernel.org>
2022-09-15USB: serial: ftdi_sio: simplify divisor handlingJohan Hovold1-3/+1
In preparation for adding further Hi-Speed types, assume the device type is Hi-Speed unless it's an explicitly listed legacy type when determining divisors. Signed-off-by: Johan Hovold <johan@kernel.org>
2022-09-15USB: serial: ftdi_sio: assume hi-speed typeJohan Hovold1-11/+12
In preparation for adding further Hi-Speed types, assume a 120 MHz clock and set the channel index by default and instead override these values as needed for legacy types. Signed-off-by: Johan Hovold <johan@kernel.org>
2022-09-15USB: serial: ftdi_sio: clean up baudrate requestJohan Hovold1-6/+3
Multi-channel devices need to encode the channel selector in their control requests and newer single-channel chip types use the same request format. Set the channel index also for these single-channel types so that the index can be used to determine the baudrate request format instead of listing types explicitly. Note that FT232H and FTX accept either 0 or 1 as selector for their single channel, presumably for backward compatibility reasons. Signed-off-by: Johan Hovold <johan@kernel.org>
2022-09-15USB: serial: ftdi_sio: clean up attribute handlingJohan Hovold1-31/+16
The driver exposes two attributes for all chip types but FT232A, which doesn't have a configurable latency timer, and SIO, which (probably) doesn't support the event-char mechanism either. Explicitly test for the exceptions rather than list each and every supported device type in the attribute helpers. Signed-off-by: Johan Hovold <johan@kernel.org>
2022-09-15USB: serial: ftdi_sio: clean up modem-status handlingJohan Hovold1-18/+4
All chip types but the original SIO (FT8U100AX) return a two-byte modem status and there's no need to explicitly list every other type in the handler. Signed-off-by: Johan Hovold <johan@kernel.org>
2022-09-15USB: serial: ftdi_sio: tighten device-type detectionJohan Hovold1-63/+55
Clean up and tighten the device-type detection, which is based on bcdDevice. Don't make assumptions about unknown (future) types (currently assumed to be either FT2232C or FT-X depending on bNumInterfaces) and instead log an error and refuse to bind so that we can add proper support when needed. Note that the bcdDevice values have been provided by FTDI. Signed-off-by: Johan Hovold <johan@kernel.org>
2022-09-15USB: serial: ftdi_sio: rename channel indexJohan Hovold1-21/+19
Multi-channel devices require a channel selector to be included in control requests. Replace "interface" with the less ambiguous "channel", which is the terminology used for newer devices, in the corresponding defines and variables. Signed-off-by: Johan Hovold <johan@kernel.org>
2022-09-15USB: serial: ftdi_sio: include FT2232D in type stringJohan Hovold1-1/+1
Include the updated D-version in the type string for the FT2232C type. Signed-off-by: Johan Hovold <johan@kernel.org>
2022-09-15USB: serial: ftdi_sio: rename chip typesJohan Hovold1-30/+30
Shorten the chip type enum and string representation for A, B and R chip types so that they don't include the IC package type in the name. Signed-off-by: Johan Hovold <johan@kernel.org>
2022-09-15USB: serial: ftdi_sio: drop redundant chip type commentsJohan Hovold1-11/+10
Drop redundant chip type comments. Signed-off-by: Johan Hovold <johan@kernel.org>
2022-09-15USB: serial: ftdi_sio: clean up chip type enumJohan Hovold1-0/+11
Clean up the chip type enum by dropping the explicit values and moving the definition to the implementation to make it easier to add further types. Signed-off-by: Johan Hovold <johan@kernel.org>
2022-09-15USB: serial: ftdi_sio: fix 300 bps rate for SIOJohan Hovold1-2/+1
The 300 bps rate of SIO devices has been mapped to 9600 bps since 2003... Let's fix the regression. Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold <johan@kernel.org>
2022-09-05Merge 6.0-rc4 into tty-nextGreg Kroah-Hartman1-0/+2
We need the tty/serial fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-30usb: serial: Make ->set_termios() old ktermios constIlpo Järvinen1-2/+4
There should be no reason to adjust old ktermios which is going to get discarded anyway. Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20220816115739.10928-8-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-29USB: serial: ftdi_sio: add Omron CS1W-CIF31 device idNiek Nooijens1-0/+2
works perfectly with: modprobe ftdi_sio echo "0590 00b2" | tee /sys/module/ftdi_sio/drivers/usb-serial\:ftdi_sio/new_id > /dev/null but doing this every reboot is a pain in the ass. Signed-off-by: Niek Nooijens <niek.nooijens@omron.com> Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold <johan@kernel.org>
2022-07-13USB: serial: ftdi_sio: add Belimo device idsLucien Buchmann1-0/+3
Those two product ids are known. Signed-off-by: Lucien Buchmann <lucien.buchmann@gmx.net> Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold <johan@kernel.org>
2022-05-05USB: serial: ftdi_sio: clean up printk format specifierDaniels Umanovskis1-1/+1
The latency is an unsigned int and should be printed as such (even if it only holds values in the range 0..255). Signed-off-by: Daniels Umanovskis <du@axentia.se> Link: https://lore.kernel.org/r/20220426123714.2000-1-du@axentia.se [ johan: amend commit message ] Signed-off-by: Johan Hovold <johan@kernel.org>
2022-02-01USB: serial: ftdi_sio: add support for Brainboxes US-159/235/320Cameron Williams1-0/+3
This patch adds support for the Brainboxes US-159, US-235 and US-320 USB-to-Serial devices. Signed-off-by: Cameron Williams <cang1@live.co.uk> Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold <johan@kernel.org>
2021-09-21USB: serial: ftdi_sio: use usb_control_msg_recv()Himadri Pandya1-38/+15
usb_control_msg_recv() nicely wraps usb_control_msg() and removes the compulsion of using DMA buffers for USB messages. It also includes proper error check for possible short read. So use the wrapper where appropriate and remove DMA buffers from the callers. Signed-off-by: Himadri Pandya <himadrispandya@gmail.com> Link: https://lore.kernel.org/r/20210801203122.3515-5-himadrispandya@gmail.com [ johan: amend commit message ] Signed-off-by: Johan Hovold <johan@kernel.org>
2021-09-01Merge tag 'usb-serial-5.15-rc1-2' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-nextGreg Kroah-Hartman1-1/+1
Johan writes: USB-serial updates for 5.15-rc1 Here are the USB serial updates for 5.15-rc1, including: - a couple of fixes for cp210x termios error handling - retrieval of fw revisions for more cp210x types - a switch to octal permissions for all module-parameter definitions Included are also various clean ups. All have been in linux-next with no reported issues. * tag 'usb-serial-5.15-rc1-2' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial: USB: serial: replace symbolic permissions by octal permissions USB: serial: cp210x: determine fw version for CP2105 and CP2108 USB: serial: cp210x: clean up type detection USB: serial: cp210x: clean up set-chars request USB: serial: cp210x: clean up control-request timeout USB: serial: cp210x: fix flow-control error handling USB: serial: cp210x: fix control-characters error handling USB: serial: io_edgeport: drop unused descriptor helper
2021-08-26USB: serial: replace symbolic permissions by octal permissionsUtkarsh Verma1-1/+1
Replace symbolic permission macros with octal permission numbers because octal permission numbers are easier to read and understand instead of their symbolic macro names. No functional change. Suggested-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Signed-off-by: Utkarsh Verma <utkarshverma294@gmail.com> Signed-off-by: Johan Hovold <johan@kernel.org>
2021-08-05USB: serial: ftdi_sio: add device ID for Auto-M3 OP-COM v2David Bauer1-0/+1
The Auto-M3 OP-COM v2 is a OBD diagnostic device using a FTD232 for the USB connection. Signed-off-by: David Bauer <mail@david-bauer.net> Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold <johan@kernel.org>
2021-06-05USB: serial: ftdi_sio: add NovaTech OrionMX product IDGeorge McCollister1-0/+1
Add PID for the NovaTech OrionMX so it can be automatically detected. Signed-off-by: George McCollister <george.mccollister@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold <johan@kernel.org>
2021-05-10USB: serial: ftdi_sio: add IDs for IDS GmbH ProductsDominik Andreas Schorpp1-0/+3
Add the IDS GmbH Vendor ID and the Product IDs for SI31A (2xRS232) and CM31A (LoRaWAN Modem). Signed-off-by: Dominik Andreas Schorpp <dominik.a.schorpp@ids.de> Signed-off-by: Juergen Borleis <jbe@pengutronix.de> Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold <johan@kernel.org>
2021-04-08USB: serial: ftdi_sio: clean up TIOCSSERIALJohan Hovold1-6/+7
The TIOCSSERIAL implementation needs to compare the old flag and divisor settings with the new to detect ASYNC_SPD changes, but there's no need to copy all driver state to the stack for that. While at it, unbreak the function parameter list. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2021-04-08USB: serial: ftdi_sio: simplify TIOCGSERIAL permission checkJohan Hovold1-12/+1
Changing the deprecated custom_divisor field is an unprivileged operation so after verifying that flag field does not contain any privileged changes both updates can be carried out by any user. Combine the two branches and drop the erroneous comment. Note that private flags field is only used for ASYNC flags so there's no need to try to retain any other bits when updating the flags. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2021-04-08USB: serial: ftdi_sio: ignore baud_base changesJohan Hovold1-4/+0
The TIOCSSERIAL error handling is inconsistent at best, but drivers tend to ignore requests to change parameters which cannot be changed rather than return an error. The FTDI driver ignores change requests for all immutable parameters but baud_base so return success also in this case for consistency. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2021-04-08USB: serial: add generic support for TIOCSSERIALJohan Hovold1-9/+2
TIOCSSERIAL is a horrid, underspecified, legacy interface which for most serial devices is only useful for setting the close_delay and closing_wait parameters. The closing_wait parameter determines how long to wait for the transfer buffers to drain during close and the default timeout of 30 seconds may not be sufficient at low line speeds. In other cases, when for example flow is stopped, the default timeout may instead be too long. Add generic support for TIOCSSERIAL and TIOCGSERIAL with handling of the three common parameters close_delay, closing_wait and line for the benefit of all USB serial drivers while still allowing drivers to implement further functionality through the existing callbacks. This currently includes a few drivers that report their base baud clock rate even if that is really only of interest when setting custom divisors through the deprecated ASYNC_SPD_CUST interface; an interface which only the FTDI driver actually implements. Some drivers have also been reporting back a fake UART type, something which should no longer be needed and will be dropped by a follow-on patch. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2021-04-08USB: serial: ftdi_sio: fix TIOCGSERIAL implementationJohan Hovold1-0/+4
TIOCSSERIAL is a horrid, underspecified, legacy interface which for most serial devices is only useful for setting the close_delay and closing_wait parameters. The FTDI driver is the only USB serial driver supporting the deprecated ASYNC_SPD flags, which are reported back as they should by TIOCGSERIAL, but the returned parameters did not include the line number. The close_delay and closing_wait parameters returned by TIOCGSERIAL are specified in centiseconds. The driver does not yet support changing these, but let's report back the default values actually used (0.5 and 30 seconds, respectively). Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2021-02-09USB: serial: make remove callback return voidUwe Kleine-König1-4/+2
All usb_serial drivers return 0 in their remove callbacks and driver core ignores the value returned by usb_serial_device_remove(). So change the remove callback to return void and return 0 unconditionally in usb_serial_device_remove(). Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org> Link: https://lore.kernel.org/r/20210208143149.963644-2-uwe@kleine-koenig.org Signed-off-by: Johan Hovold <johan@kernel.org>
2021-02-01USB: serial: ftdi_sio: restore divisor-encoding commentsJohan Hovold1-8/+8
Add back a few explanatory comments related to the divisor encoding which got lost in a coding-style clean up many years ago. Signed-off-by: Johan Hovold <johan@kernel.org>
2021-02-01USB: serial: ftdi_sio: fix FTX sub-integer prescalerJohan Hovold1-2/+3
The most-significant bit of the sub-integer-prescaler index is set in the high byte of the baudrate request wIndex also for FTX devices. This fixes rates like 1152000 which got mapped to 1.2 MBd. Reported-by: Vladimir <svv75@mail.ru> Link: https://bugzilla.kernel.org/show_bug.cgi?id=210351 Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold <johan@kernel.org>
2020-12-09USB: serial: ftdi_sio: log the CBUS GPIO validityMarc Zyngier1-0/+6
The validity of the ftdi CBUS GPIO is pretty hidden so far, and finding out *why* some GPIOs don't work is sometimes hard to identify. So let's help the user by displaying the map of the CBUS pins that are valid for a GPIO. Suggested-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20201204164739.781812-4-maz@kernel.org Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> [johan: demote to KERN_DEBUG, rephrase messages, drop ftx-prog warning] Signed-off-by: Johan Hovold <johan@kernel.org>
2020-12-09USB: serial: ftdi_sio: drop GPIO line checking dead codeMarc Zyngier1-3/+0
Now that gpiolib can track the validity of GPIO pins, there is no need to check whether the line is valid in request(). Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20201204164739.781812-5-maz@kernel.org Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> [johan: amend commit message] Signed-off-by: Johan Hovold <johan@kernel.org>
2020-12-09USB: serial: ftdi_sio: report the valid GPIO lines to gpiolibMarc Zyngier1-0/+14
Since it is pretty common for only some of the CBUS lines to be valid as GPIO lines, let's report such validity to the rest of the kernel. Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20201204164739.781812-3-maz@kernel.org Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2020-10-05USB: serial: ftdi_sio: use cur_altsetting for consistencyMychaela N. Falconia1-7/+7
ftdi_determine_type() function had this construct in it to get the number of the interface it is operating on: inter = serial->interface->altsetting->desc.bInterfaceNumber; Elsewhere in this driver cur_altsetting is used instead for this purpose. Change ftdi_determine_type() to use cur_altsetting for consistency. Signed-off-by: Mychaela N. Falconia <falcon@freecalypso.org> [ johan: fix old style issues; drop braces and random white space ] Signed-off-by: Johan Hovold <johan@kernel.org>
2020-10-01USB: serial: ftdi_sio: clean up jtag quirksJohan Hovold1-10/+8
Drivers should not assume that interface descriptors have been parsed in any particular order so match on interface number instead when rejecting JTAG interfaces. Also use the interface struct device for notifications so that the interface number is included. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2020-09-29USB: serial: ftdi_sio: add support for FreeCalypso JTAG+UART adaptersMychaela N. Falconia1-0/+5
There exist many FT2232-based JTAG+UART adapter designs in which FT2232 Channel A is used for JTAG and Channel B is used for UART. The best way to handle them in Linux is to have the ftdi_sio driver create a ttyUSB device only for Channel B and not for Channel A: a ttyUSB device for Channel A would be bogus and will disappear as soon as the user runs OpenOCD or other applications that access Channel A for JTAG from userspace, causing undesirable noise for users. The ftdi_sio driver already has a dedicated quirk for such JTAG+UART FT2232 adapters, and it requires assigning custom USB IDs to such adapters and adding these IDs to the driver with the ftdi_jtag_quirk applied. Boutique hardware manufacturer Falconia Partners LLC has created a couple of JTAG+UART adapter designs (one buffered, one unbuffered) as part of FreeCalypso project, and this hardware is specifically made to be used with Linux hosts, with the intent that Channel A will be accessed only from userspace via appropriate applications, and that Channel B will be supported by the ftdi_sio kernel driver, presenting a standard ttyUSB device to userspace. Toward this end the hardware manufacturer will be programming FT2232 EEPROMs with custom USB IDs, specifically with the intent that these IDs will be recognized by the ftdi_sio driver with the ftdi_jtag_quirk applied. Signed-off-by: Mychaela N. Falconia <falcon@freecalypso.org> [johan: insert in PID order and drop unused define] Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold <johan@kernel.org>
2020-08-24USB: serial: ftdi_sio: add IDs for Xsens Mti USB converterPatrick Riphagen1-0/+1
The device added has an FTDI chip inside. The device is used to connect Xsens USB Motion Trackers. Cc: stable@vger.kernel.org Signed-off-by: Patrick Riphagen <patrick.riphagen@xsens.com> Signed-off-by: Johan Hovold <johan@kernel.org>
2020-07-09USB: serial: drop redundant transfer-buffer castsJohan Hovold1-1/+1
Drop redundant URB transfer-buffer casts. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2020-07-09USB: serial: only set sysrq timestamp for consolesJohan Hovold1-1/+1
Only set the sysrq timestamp for console ports to avoid having every driver also check the console flag when processing incoming data. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2020-07-09USB: serial: ftdi_sio: fix break and sysrq handlingJohan Hovold1-7/+17
Only the last NUL in a packet should be flagged as a break character, for example, to avoid dropping unrelated characters when IGNBRK is set. Also make sysrq work by consuming the break character instead of having it immediately cancel the sysrq request, and by not processing it prematurely to avoid triggering a sysrq based on an unrelated character received in the same packet (which was received *before* the break). Note that the break flag can be left set also for a packet received immediately following a break and that and an ending NUL in such a packet will continue to be reported as a break as there's no good way to tell it apart from an actual break. Tested on FT232R and FT232H. Fixes: 72fda3ca6fc1 ("USB: serial: ftd_sio: implement sysrq handling on break") Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2020-07-09USB: serial: ftdi_sio: clean up receive processingJohan Hovold1-10/+9
Clean up receive processing by dropping the character pointer and keeping the length argument unchanged throughout the function. Also make it more apparent that sysrq processing can consume a characters by adding an explicit continue. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2020-07-09USB: serial: ftdi_sio: make process-packet buffer unsignedJohan Hovold1-11/+11
Use an unsigned type for the process-packet buffer argument and give it a more apt name. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>