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bb246681b3
linux/drivers/usb/serial
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Anthony Mallet bb246681b3 USB: serial: ftdi_sio: fix setting latency for unprivileged users 
Commit 557aaa7ffa ("ft232: support the ASYNC_LOW_LATENCY
flag") enables unprivileged users to set the FTDI latency timer,
but there was a logic flaw that skipped sending the corresponding
USB control message to the device.

Specifically, the device latency timer would not be updated until next
open, something which was later also inadvertently broken by commit
c19db4c9e4 ("USB: ftdi_sio: set device latency timeout at port
probe").

A recent commit c6dce26266 ("USB: serial: ftdi_sio: fix extreme
low-latency setting") disabled the low-latency mode by default so we now
need this fix to allow unprivileged users to again enable it.

Signed-off-by: Anthony Mallet <anthony.mallet@laas.fr>
[johan: amend commit message]
Fixes: 557aaa7ffa ("ft232: support the ASYNC_LOW_LATENCY flag")
Fixes: c19db4c9e4 ("USB: ftdi_sio: set device latency timeout at port probe").
Cc: stable <stable@vger.kernel.org>     # 2.6.31
Signed-off-by: Johan Hovold <johan@kernel.org>
2017-05-15 10:20:25 +02:00
..
aircable.c USB: serial: aircable: use calc_num_endpoints to verify endpoints 2017-03-28 11:00:08 +02:00
ark3116.c USB: serial: ark3116: simplify endpoint sanity check 2017-03-16 10:33:42 +01:00
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: change initial line-control settings 2017-01-16 12:32:21 +01:00
console.c USB: serial: console: clean up sanity checks 2017-02-08 21:20:49 +01:00
cp210x.c USB/PHY patches for 4.11-rc1 2017-02-22 11:15:59 -08:00
cyberjack.c USB: serial: cyberjack: simplify endpoint check 2017-03-16 10:33:42 +01:00
cypress_m8.c USB: serial: cypress_m8: remove unused variable 2017-01-16 12:26:58 +01:00
cypress_m8.h
digi_acceleport.c USB: serial: digi_acceleport: simplify endpoint check 2017-03-16 10:33:42 +01:00
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: clean up port bulk-out setup 2017-03-28 11:14:13 +02:00
ftdi_sio_ids.h USB: serial: ftdi_sio: add device ID for Microsemi/Arrow SF2PLUS Dev Kit 2017-04-19 09:58:50 +02:00
ftdi_sio.c USB: serial: ftdi_sio: fix setting latency for unprivileged users 2017-05-15 10:20:25 +02:00
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: relax generic driver bulk-endpoint requirement 2017-03-28 10:54:39 +02:00
io_16654.h
io_edgeport.c USB: serial: constify static arrays 2017-04-19 09:45:43 +02:00
io_edgeport.h
io_ionsp.h
io_ti.c USB: serial: drop termios-flag debugging 2017-03-29 16:14:35 +02:00
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: serial: ipaq: always register a single port 2017-03-28 11:00:09 +02:00
ipw.c
ir-usb.c
iuu_phoenix.c USB: serial: iuu_phoenix: drop excessive sanity checks 2017-04-10 09:42:00 +02:00
iuu_phoenix.h
Kconfig USB: serial: add uPD78F0730 USB to Serial Adaptor Driver 2017-01-26 10:18:17 +01:00
keyspan_pda.c USB: serial: keyspan_pda: simplify endpoint check 2017-03-16 10:33:44 +01:00
keyspan_usa26msg.h
keyspan_usa28msg.h
keyspan_usa49msg.h
keyspan_usa67msg.h
keyspan_usa90msg.h
keyspan.c USB: serial: keyspan: drop header file 2017-02-15 17:42:28 +01:00
kl5kusb105.c USB: serial: kl5kusb105: remove unused termios structure 2017-01-16 13:00:22 +01:00
kl5kusb105.h
kobil_sct.c USB: serial: kobil_sct: simplify endpoint check 2017-03-16 10:33:44 +01:00
kobil_sct.h
Makefile USB: serial: add uPD78F0730 USB to Serial Adaptor Driver 2017-01-26 10:18:17 +01:00
Makefile-keyspan_pda_fw
mct_u232.c USB: serial: mct_u232: fix modem-status error handling 2017-01-16 16:38:56 +01:00
mct_u232.h
metro-usb.c USB: serial: metro-usb: drop redundant URB reinitialisation 2017-02-08 19:28:02 +01:00
mos7720.c USB: serial: constify static arrays 2017-04-19 09:45:43 +02:00
mos7840.c USB: serial: drop termios-flag debugging 2017-03-29 16:14:35 +02:00
mxuport.c USB: serial: mxuport: clean up port bulk-out setup 2017-03-28 11:14:13 +02:00
navman.c
omninet.c USB: serial: omninet: use generic write implementation 2017-03-28 11:13:55 +02:00
opticon.c USB: serial: opticon: simplify endpoint check 2017-03-16 10:33:45 +01:00
option.c usb: serial: option: add Telit ME910 support 2017-05-15 10:02:26 +02:00
oti6858.c USB: serial: oti6858: simplify endpoint check 2017-03-16 10:33:46 +01:00
oti6858.h
pl2303.c USB: serial: pl2303: clean up legacy endpoint hack 2017-03-28 11:00:07 +02:00
pl2303.h USB: serial: pl2303: add ATEN device ID 2017-01-31 17:27:04 +01:00
qcaux.c
qcserial.c USB: serial: qcserial: add Dell DW5811e 2017-03-18 09:57:14 +01:00
quatech2.c USB: serial: quatech2: drop redundant tty_buffer_request_room 2017-04-10 09:42:00 +02:00
safe_serial.c USB: serial: safe_serial: fix information leak in completion handler 2017-03-08 16:14:42 +01:00
sierra.c USB: serial: allow subdrivers to modify port-endpoint mapping 2017-03-28 10:54:39 +02:00
spcp8x5.c USB: serial: spcp8x5: simplify endpoint check 2017-03-16 10:33:46 +01:00
ssu100.c USB: serial: drop unused ASYNC flags 2017-01-26 09:49:13 +01:00
symbolserial.c USB: serial: symbolserial: simplify endpoint check 2017-03-16 10:33:47 +01:00
ti_usb_3410_5052.c USB: serial: drop termios-flag debugging 2017-03-29 16:14:35 +02:00
upd78f0730.c USB: serial: upd78f0730: sort device ids 2017-02-13 14:50:44 +01:00
usb_debug.c USB patches for 4.12-rc1 2017-05-04 18:03:51 -07:00
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: drop obsolete open-race workaround 2017-03-31 13:14:39 +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: clean up treo endpoint hack 2017-03-28 11:14:11 +02:00
visor.h
whiteheat.c USB: serial: whiteheat: simplify endpoint check 2017-03-16 10:33:47 +01:00
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