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linux/drivers/usb/serial
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Johan Hovold c432df1559 USB: serial: ch341: fix lockup of devices with limited prescaler 
Michael Hanselmann reports that

	[a] subset of all CH341 devices stop responding to bulk
	transfers, usually after the third byte, when the highest
	prescaler bit (0b100) is set. There is one exception, namely a
	prescaler of exactly 0b111 (fact=1, ps=3).

Fix this by forcing a lower base clock (fact = 0) whenever needed.

This specifically makes the standard rates 110, 134 and 200 bps work
again with these devices.

Fixes: 35714565089e ("USB: serial: ch341: reimplement line-speed handling")
Cc: stable <stable@vger.kernel.org>	# 5.5
Reported-by: Michael Hanselmann <public@hansmi.ch>
Link: https://lore.kernel.org/r/20200514141743.GE25962@localhost
Signed-off-by: Johan Hovold <johan@kernel.org>
2020-05-27 15:01:05 +02:00
..
aircable.c
USB: serial: fix module-license macros
2017-11-04 11:58:00 +01:00
ark3116.c
USB: serial: ark3116: drop redundant init_termios
2019-04-26 08:37:53 +02:00
belkin_sa.c
docs: usb: rename files to .rst and add them to drivers-api
2019-06-20 14:28:36 +02:00
belkin_sa.h
USB: serial: Use the correct style for SPDX License Identifier
2020-04-22 09:26:47 +02:00
bus.c
USB: serial: use tty_port_register_device()
2018-05-17 11:22:00 +02:00
ch341.c
USB: serial: ch341: fix lockup of devices with limited prescaler
2020-05-27 15:01:05 +02:00
console.c
USB: serial: console: fix reported terminal settings
2018-12-05 11:29:10 +01:00
cp210x.c
usb-serial: cp201x: support Mark-10 digital force gauge
2019-11-18 12:24:29 +01:00
cyberjack.c
USB: serial: cyberjack: fix spelling mistake "To" -> "Too"
2020-01-23 09:14:52 +01:00
cypress_m8.c
docs: usb: rename files to .rst and add them to drivers-api
2019-06-20 14:28:36 +02:00
cypress_m8.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
digi_acceleport.c
USB: serial: digi_acceleport: remove redundant assignment to pointer priv
2020-02-10 10:38:54 +01:00
empeg.c
docs: usb: rename files to .rst and add them to drivers-api
2019-06-20 14:28:36 +02:00
ezusb_convert.pl
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
f81232.c
USB: serial: f81232: add control driver for F81534A
2020-03-18 11:50:14 +01:00
f81534.c
USB: serial: f81534: fix reading old/new IC config
2018-11-20 18:25:44 +01:00
ftdi_sio_ids.h
USB: serial: ftdi_sio: add device IDs for U-Blox C099-F9P
2019-11-14 18:55:31 +01:00
ftdi_sio.c
USB: serial: ftdi_sio: add device IDs for U-Blox C099-F9P
2019-11-14 18:55:31 +01:00
ftdi_sio.h
USB: serial: ftdi_sio: add support for FT232R CBUS gpios
2018-10-05 08:57:06 +02:00
garmin_gps.c
USB: serial: garmin_gps: Use flexible-array member
2020-01-17 11:44:23 +01:00
generic.c
USB: serial: clean up carrier-detect helper
2020-03-11 09:38:01 +01:00
io_16654.h
USB: serial: Use the correct style for SPDX License Identifier
2020-04-22 09:26:47 +02:00
io_edgeport.c
USB: serial: io_edgeport: fix slab-out-of-bounds read in edge_interrupt_callback
2020-03-26 10:22:15 +01:00
io_edgeport.h
USB: serial: Use the correct style for SPDX License Identifier
2020-04-22 09:26:47 +02:00
io_ionsp.h
USB: serial: Use the correct style for SPDX License Identifier
2020-04-22 09:26:47 +02:00
io_ti.c
io_ti: switch to ->get_serial()
2018-10-13 00:50:38 -04:00
io_ti.h
USB: serial: Use the correct style for SPDX License Identifier
2020-04-22 09:26:47 +02:00
io_usbvend.h
USB: serial: Use the correct style for SPDX License Identifier
2020-04-22 09:26:47 +02:00
ipaq.c
USB: serial: Remove redundant license text
2017-11-04 11:55:38 +01:00
ipw.c
USB: serial: Remove redundant license text
2017-11-04 11:55:38 +01:00
ir-usb.c
USB: serial: ir-usb: Silence harmless uninitialized variable warning
2020-02-10 10:06:51 +01:00
iuu_phoenix.c
USB: serial: iuu_phoenix: simplify init_termios
2019-04-26 08:38:00 +02:00
iuu_phoenix.h
USB: serial: Use the correct style for SPDX License Identifier
2020-04-22 09:26:47 +02:00
Kconfig
usb: drop comment about 2 uhci drivers
2019-12-10 11:34:28 +01:00
keyspan_pda.c
docs: usb: rename files to .rst and add them to drivers-api
2019-06-20 14:28:36 +02:00
keyspan_usa26msg.h
USB: serial: keyspan_usa: add proper SPDX lines for .h files
2019-01-18 11:09:32 +01:00
keyspan_usa28msg.h
USB: serial: keyspan_usa: add proper SPDX lines for .h files
2019-01-18 11:09:32 +01:00
keyspan_usa49msg.h
USB: serial: keyspan_usa: add proper SPDX lines for .h files
2019-01-18 11:09:32 +01:00
keyspan_usa67msg.h
USB: serial: keyspan_usa: add proper SPDX lines for .h files
2019-01-18 11:09:32 +01:00
keyspan_usa90msg.h
USB: serial: keyspan_usa: add proper SPDX lines for .h files
2019-01-18 11:09:32 +01:00
keyspan.c
USB: serial: keyspan: handle unbound ports
2020-01-17 16:22:58 +01:00
kl5kusb105.c
USB: serial: kl5kusb105: remove KLSI device id
2018-07-11 10:11:29 +02:00
kl5kusb105.h
USB: serial: kl5kusb105: remove KLSI device id
2018-07-11 10:11:29 +02:00
kobil_sct.c
USB: serial: kobil_sct: add missing version error handling
2018-07-06 10:42:42 +02:00
kobil_sct.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
Makefile
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
Makefile-keyspan_pda_fw
USB: add SPDX identifiers to all remaining Makefiles
2017-11-07 15:53:48 +01:00
mct_u232.c
USB: serial: Remove redundant license text
2017-11-04 11:55:38 +01:00
mct_u232.h
USB: serial: Use the correct style for SPDX License Identifier
2020-04-22 09:26:47 +02:00
metro-usb.c
USB: serial: fix module-license macros
2017-11-04 11:58:00 +01:00
mos7720.c
USB: serial: mos7720: fix remote wakeup
2019-11-12 09:53:07 +01:00
mos7840.c
USB: serial: mos7840: drop port open flag
2019-11-12 09:57:32 +01:00
mxuport.c
USB: serial: Remove redundant license text
2017-11-04 11:55:38 +01:00
navman.c
USB: serial: fix module-license macros
2017-11-04 11:58:00 +01:00
omninet.c
docs: usb: rename files to .rst and add them to drivers-api
2019-06-20 14:28:36 +02:00
opticon.c
Here are the USB-serial updates for 5.6-rc1, including:
2020-01-27 10:21:22 +01:00
option.c
USB-serial updates for 5.7-rc1
2020-03-26 11:15:30 +01:00
oti6858.c
docs: usb: rename files to .rst and add them to drivers-api
2019-06-20 14:28:36 +02:00
oti6858.h
USB: serial: Use the correct style for SPDX License Identifier
2020-04-22 09:26:47 +02:00
pl2303.c
USB: serial: pl2303: add device-id for HP LD381
2020-03-12 12:31:01 +01:00
pl2303.h
USB: serial: Use the correct style for SPDX License Identifier
2020-04-22 09:26:47 +02:00
qcaux.c
USB: serial: fix module-license macros
2017-11-04 11:58:00 +01:00
qcserial.c
USB: serial: qcserial: add Sierra Wireless EM7565
2017-12-15 09:41:46 +01:00
quatech2.c
USB: serial: quatech2: handle unbound ports
2020-01-17 16:22:59 +01:00
safe_serial.c
USB: serial: Remove redundant license text
2017-11-04 11:55:38 +01:00
sierra.c
USB: serial: sierra: use irqsave() in USB's complete callback
2018-06-26 15:22:25 +02:00
spcp8x5.c
USB: serial: spcp8x5: simplify init_termios
2019-04-26 08:38:02 +02:00
ssu100.c
ssu100: switch to ->get_serial()
2018-10-13 00:50:41 -04:00
symbolserial.c
USB: serial: symbolserial: use irqsave() in USB's complete callback
2018-06-26 15:25:01 +02:00
ti_usb_3410_5052.c
USB: Replace zero-length array with flexible-array member
2020-02-23 19:24:51 +01:00
upd78f0730.c
USB: serial: Remove redundant license text
2017-11-04 11:55:38 +01:00
usb_debug.c
USB: serial: usb_debug: add new USB device id
2017-11-28 09:54:11 +01:00
usb_wwan.c
USB: serial: usb_wwan: do not resubmit rx urb on fatal errors
2020-05-19 09:46:06 +02:00
usb-serial-simple.c
USB: serial: simple: Add Motorola Solutions TETRA MTP3xxx and MTP85xx
2020-01-13 15:04:35 +01:00
usb-serial.c
USB: serial: fix tty cleanup-op kernel-doc
2020-03-11 09:39:01 +01:00
usb-wwan.h
USB: serial: option: add ZLP support for 0x1bc7/0x9010
2019-12-20 12:07:12 +01:00
visor.c
docs: usb: rename files to .rst and add them to drivers-api
2019-06-20 14:28:36 +02:00
visor.h
USB: serial: Use the correct style for SPDX License Identifier
2020-04-22 09:26:47 +02:00
whiteheat.c
USB: serial: whiteheat: fix line-speed endianness
2019-10-30 10:06:32 +01:00
whiteheat.h
USB: serial: Use the correct style for SPDX License Identifier
2020-04-22 09:26:47 +02:00
wishbone-serial.c
USB: serial: Remove redundant license text
2017-11-04 11:55:38 +01:00
xsens_mt.c
USB: serial: fix module-license macros
2017-11-04 11:58:00 +01:00