linux-stable.git/drivers/usb/serial, branch v3.4.76

USB: serial: fix race in generic write

2014-01-08T17:42:10+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

2013-12-20T15:34:20+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

2013-12-20T15:34:20+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

2013-12-12T06:34:11+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

2013-12-12T06:34:11+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: pl2303: fixed handling of CS5 setting

2013-12-12T06:34:11+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

2013-11-29T18:50:32+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

2013-11-20T18:43:18+00:00

commit 0636fc507a976cdc40f21bdbcce6f0b98ff1dfe9 upstream.

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

USB: serial: ftdi_sio: add id for Z3X Box device

2013-11-13T03:01:48+00:00

commit e1466ad5b1aeda303f9282463d55798d2eda218c upstream.

Custom VID/PID for Z3X Box device, popular tool for cellphone flashing.

Signed-off-by: Alexey E. Kramarenko 
Signed-off-by: Greg Kroah-Hartman

USB: support new huawei devices in option.c

2013-11-13T03:01:47+00:00

commit d544db293a44a2a3b09feab7dbd59668b692de71 upstream.

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

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