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55fa15b598
linux/drivers/usb/serial
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Johan Hovold 55fa15b598 USB: serial: ch341: fix baud rate and line-control handling 
Revert to using direct register writes to set the divisor and
line-control registers.

A recent change switched to using the init vendor command to update
these registers, something which also enabled support for CH341A
devices. It turns out that simply setting bit 7 in the divisor register
is sufficient to support CH341A and specifically prevent data from being
buffered until a full endpoint-size packet (32 bytes) has been received.

Using the init command also had the side-effect of temporarily
deasserting the DTR/RTS signals on every termios change (including
initialisation on open) something which for example could cause problems
in setups where DTR is used to trigger a reset.

Fixes: 4e46c410e0 ("USB: serial: ch341: reinitialize chip on
reconfiguration")
Signed-off-by: Johan Hovold <johan@kernel.org>
2017-01-09 14:55:40 +01:00
..
aircable.c
ark3116.c
belkin_sa.c
belkin_sa.h
bus.c USB: serial: clean up bus probe error handling 2015-02-26 17:13:05 +01:00
ch341.c USB: serial: ch341: fix baud rate and line-control handling 2017-01-09 14:55:40 +01:00
console.c tty: Replace ASYNC_INITIALIZED bit and update atomically 2016-04-30 09:26:55 -07:00
cp210x.c USB-serial updates for v4.10-rc1 2016-12-01 16:12:12 +01:00
cyberjack.c USB: serial: cyberjack: fix NULL-deref at open 2017-01-04 10:37:14 +01:00
cypress_m8.c USB: cypress_m8: add endpoint sanity check 2016-03-31 09:28:46 -07:00
cypress_m8.h
digi_acceleport.c tty: Replace TTY_THROTTLED bit tests with tty_throttled() 2016-04-30 09:26:55 -07:00
empeg.c
ezusb_convert.pl
f81232.c USB: f81232: fix some minor style issues 2015-03-27 17:36:29 +01:00
f81534.c USB: serial: f81534: detect errors from f81534_logic_to_phy_port() 2017-01-02 10:31:08 +01:00
ftdi_sio_ids.h USB: serial: ftdi_sio: add support for TI CC3200 LaunchPad 2016-11-07 10:23:03 +01:00
ftdi_sio.c USB-serial updates for v4.10-rc1 2016-12-01 16:12:12 +01:00
ftdi_sio.h USB: serial: fix compare_const_fl.cocci warnings 2016-02-28 14:35:58 +01:00
garmin_gps.c USB: serial: garmin_gps: fix memory leak on failed URB submit 2017-01-04 10:37:15 +01:00
generic.c USB: serial: use variable for status 2016-07-16 12:45:39 +02:00
io_16654.h
io_edgeport.c USB: serial: io_edgeport: fix NULL-deref at open 2017-01-04 10:37:15 +01:00
io_edgeport.h
io_ionsp.h
io_tables.h
io_ti.c USB: serial: io_ti: bind to interface after fw download 2017-01-04 10:37:17 +01:00
io_ti.h
io_usbvend.h USB: io_ti: fix firmware download on big-endian machines (part 2) 2014-05-27 15:12:57 -07:00
ipaq.c USB: ipaq.c: fix a timeout loop 2015-12-18 09:30:34 -08:00
ipw.c
ir-usb.c
iuu_phoenix.c USB: serial: iuu_phoenix: fix NULL-deref at open 2017-01-04 10:37:18 +01:00
iuu_phoenix.h
Kconfig USB: serial: add Fintek F81532/534 driver 2016-11-29 11:13:16 +01:00
keyspan_pda.c USB: serial: keyspan_pda: verify endpoints at probe 2017-01-04 10:37:18 +01:00
keyspan_usa26msg.h
keyspan_usa28msg.h
keyspan_usa49msg.h
keyspan_usa67msg.h
keyspan_usa90msg.h
keyspan.c USB: serial: keyspan: fix debug and error messages 2016-05-10 09:39:57 +02:00
keyspan.h
kl5kusb105.c USB: serial: kl5kusb105: abort on open exception path 2016-11-30 10:54:30 +01:00
kl5kusb105.h
kobil_sct.c USB: serial: kobil_sct: fix NULL-deref in write 2017-01-04 10:37:18 +01:00
kobil_sct.h
Makefile USB: serial: add Fintek F81532/534 driver 2016-11-29 11:13:16 +01:00
Makefile-keyspan_pda_fw
mct_u232.c USB: mct_u232: add sanity checking in probe 2016-03-31 09:28:46 -07:00
mct_u232.h
metro-usb.c
mos7720.c USB: serial: mos7720: remove obsolete port initialisation 2017-01-04 10:37:20 +01:00
mos7840.c USB: serial: mos7840: fix misleading interrupt-URB comment 2017-01-04 10:37:21 +01:00
mxuport.c USB patches for 4.7-rc1 2016-05-20 21:12:25 -07:00
navman.c
omninet.c USB: serial: omninet: fix NULL-derefs at open and disconnect 2017-01-04 10:37:21 +01:00
opticon.c USB: serial: fix invalid user-pointer checks 2016-11-11 17:54:04 +01:00
option.c USB: serial: option: add dlink dwm-158 2016-12-09 11:44:11 +01:00
oti6858.c USB: serial: oti6858: fix NULL-deref at open 2017-01-04 10:43:48 +01:00
oti6858.h
pl2303.c USB: serial: pl2303: fix NULL-deref at open 2017-01-04 10:43:56 +01:00
pl2303.h USB: pl2303: Remove support for Samsung I330 2015-04-29 12:34:24 +02:00
qcaux.c
qcserial.c USB: qcserial: add Sierra Wireless EM74xx device ID 2016-03-02 09:35:32 +01:00
quatech2.c USB: serial: quatech2: fix sleep-while-atomic in close 2017-01-04 10:43:56 +01:00
safe_serial.c USB: serial: fix boolinit.cocci warnings 2016-02-28 14:36:53 +01:00
sierra.c tty: Replace ASYNC_INITIALIZED bit and update atomically 2016-04-30 09:26:55 -07:00
spcp8x5.c USB: serial: spcp8x5: fix NULL-deref at open 2017-01-04 10:43:57 +01:00
ssu100.c USB: serial: fix invalid user-pointer checks 2016-11-11 17:54:04 +01:00
symbolserial.c USB: symbolserial: Correct transferred data size 2015-08-18 10:06:22 -07:00
ti_usb_3410_5052.c USB: serial: ti_usb_3410_5052: fix NULL-deref at open 2017-01-04 10:43:57 +01:00
usb_debug.c
usb_wwan.c USB: serial: fix invalid user-pointer checks 2016-11-11 17:54:04 +01:00
usb-serial-simple.c USB: serial: simple: add support for another Infineon flashloader 2016-09-12 10:19:41 +02:00
usb-serial.c USB: serial: fix potential NULL-dereference at probe 2016-10-21 16:47:17 +02:00
usb-wwan.h USB: usb_wwan/option: generalize option_send_setup for other drivers 2015-10-09 12:42:40 +02:00
visor.c USB: serial: visor: fix crash on detecting device without write_urbs 2016-01-25 11:40:45 +01:00
visor.h
whiteheat.c USB: whiteheat: fix potential null-deref at probe 2015-09-23 12:15:19 -07:00
whiteheat.h
wishbone-serial.c
xsens_mt.c usb: serial: xsens_mt: always bind to interface number 1 2014-09-04 11:18:26 +02:00