linux-stable.git/drivers/usb/serial, branch v3.12.9

usb: serial: zte_ev: move support for ZTE AC2726 from zte_ev back to option

2014-01-09T20:25:08+00:00

commit 52d0dc7597c89b2ab779f3dcb9b9bf0800dd9218 upstream.

ZTE AC2726 EVDO modem drops ppp connection every minute when driven by
zte_ev but works fine when driven by option. Move the support for AC2726
back to option driver.

Signed-off-by: Dmitry Kunilov 
Signed-off-by: Greg Kroah-Hartman

USB: serial: fix race in generic write

2014-01-09T20:25:06+00:00

commit 6f6485463aada1ec6a0f3db6a03eb8e393d6bb55 upstream.

Fix race in generic write implementation, which could lead to
temporarily degraded throughput.

The current generic write implementation introduced by commit
27c7acf22047 ("USB: serial: reimplement generic fifo-based writes") has
always had this bug, although it's fairly hard to trigger and the
consequences are not likely to be noticed.

Specifically, a write() on one CPU while the completion handler is
running on another could result in only one of the two write urbs being
utilised to empty the remainder of the write fifo (unless there is a
second write() that doesn't race during that time).

Signed-off-by: Johan Hovold 
Signed-off-by: Greg Kroah-Hartman

USB: option: support new huawei devices

2013-12-20T15:48:56+00:00

commit 2bf308d7bc5e8cdd69672199f59532f35339133c upstream.

Add new supporting declarations to option.c, to support Huawei new
devices with new bInterfaceProtocol value.

Signed-off-by: fangxiaozhi 
Signed-off-by: Greg Kroah-Hartman

USB: serial: option: blacklist interface 1 for Huawei E173s-6

2013-12-20T15:48:55+00:00

commit 8f173e22abf2258ddfa73f46eadbb6a6c29f1631 upstream.

Interface 1 on this device isn't for option to bind to otherwise an oops
on usb_wwan with log flooding will happen when accessing the port:

tty_release: ttyUSB1: read/write wait queue active!

It doesn't seem to respond to QMI if it's added to qmi_wwan so don't add
it there - it's likely used by the card reader.

Signed-off-by: Gustavo Zacarias 
Signed-off-by: Greg Kroah-Hartman

USB: spcp8x5: correct handling of CS5 setting

2013-12-12T06:37:56+00:00

commit 711fbdfbf2bc4827214a650afe3f64767a1aba16 upstream.

This patch removes an erroneous check of CSIZE, which made it impossible to set
CS5.

Compiles clean, but couldn't test against hardware.

Signed-off-by: Colin Leitner 
Signed-off-by: Johan Hovold 
Signed-off-by: Greg Kroah-Hartman

USB: mos7840: correct handling of CS5 setting

2013-12-12T06:37:55+00:00

commit 78692cc3382e0603a47e1f2aaeffe0d99891994d upstream.

This patch removes an erroneous check of CSIZE, which made it impossible to set
CS5.

Compiles clean, but couldn't test against hardware.

Signed-off-by: Colin Leitner 
Signed-off-by: Johan Hovold 
Signed-off-by: Greg Kroah-Hartman

USB: ftdi_sio: fixed handling of unsupported CSIZE setting

2013-12-12T06:37:55+00:00

commit 8704211f65a2106ba01b6ac9727cdaf9ca11594c upstream.

FTDI UARTs support only 7 or 8 data bits. Until now the ftdi_sio driver would
only report this limitation for CS6 to dmesg and fail to reflect this fact to
tcgetattr.

This patch reverts the unsupported CSIZE setting and reports the fact with less
severance to dmesg for both CS5 and CS6.

To test the patch it's sufficient to call

    stty -F /dev/ttyUSB0 cs5

which will succeed without the patch and report an error with the patch
applied.

As an additional fix this patch ensures that the control request will always
include a data bit size.

Signed-off-by: Colin Leitner 
Signed-off-by: Johan Hovold 
Signed-off-by: Greg Kroah-Hartman

USB: pl2303: fixed handling of CS5 setting

2013-12-12T06:37:55+00:00

commit a313249937820f8b1996133fc285efbd6aad2c5b upstream.

This patch fixes the CS5 setting on the PL2303 USB-to-serial devices. CS5 has a
value of 0 and the CSIZE setting has been skipped altogether by the enclosing
if. Tested on 3.11.6 and the scope shows the correct output after the fix has
been applied.

Tagged to be added to stable, because it fixes a user visible driver bug and is
simple enough to backport easily.

Signed-off-by: Colin Leitner 
Signed-off-by: Johan Hovold 
Signed-off-by: Greg Kroah-Hartman

USB: mos7840: fix tiocmget error handling

2013-11-29T19:27:52+00:00

commit a91ccd26e75235d86248d018fe3779732bcafd8d upstream.

Make sure to return errors from tiocmget rather than rely on
uninitialised stack data.

Signed-off-by: Johan Hovold 
Signed-off-by: Greg Kroah-Hartman

USB: add new zte 3g-dongle's pid to option.c

2013-11-20T20:37:36+00:00

commit 0636fc507a976cdc40f21bdbcce6f0b98ff1dfe9 upstream.

Signed-off-by: Rui li 
Cc: stable 
Signed-off-by: Greg Kroah-Hartman