As David VomLehn points out, it was possible to receive an interrupt
before clearing the free-urb flag which could lead to the urb being
incorrectly marked as busy.
For the same reason, move tx_bytes accounting so that it will never be
negative.
Note that the free-flags set and clear operations do not need any
additional locking as they are manipulated while USB_SERIAL_WRITE_BUSY
is set.
Reported-by: David VomLehn <dvomlehn@cisco.com>
Tested-by: David VomLehn <dvomlehn@cisco.com>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Add support for the Quatech SSU-100 single port usb to serial device.
This driver is based on the ftdi_sio.c driver and the original
serqt_usb driver from Quatech.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch is to add a US Interface, Inc. "Navigator" USB device.
Specifically, it's a HAM Radio USB sound modem that also
incorporates three pairs of unique FTDI serial ports. The standard
Linux FTDI serial driver will only recognize the first two serial
ports of an unknown FDTI derived device and this patch adds in
recognition to these specific new IDs.
Signed-off-by: David A. Ranch <dranch@trinnet.net>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch adds the product IDs of Huawei's K3765 and K4505 mobile
broadband usb modems to option.c. It also adds a quirk to the option
probe function so that binding to the device's network interface(class
0xff) is avoided. This is necessary to allow another driver to bind to
that, and to avoid programs like wvdial opening a nonfunctioning tty
during modem discovery.
Signed-off-by: Andrew Bird <ajb@spheresystems.co.uk>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
I have added the ProductID=0xe729 VendorID=FTDI_VID=0x0403 which will
enable support for the Segway Robotic Mobility Platform (RMP200) in the
ftdi_sio kernel module. Currently, users of the Segway RMP200 must use
a RUN+="/sbin/modprobe -q ftdi-sio product=0xe729 vendor=0x0403 in a
udev rule to get the ftdi_sio module to handle the usb interface and
mount it on /dev/ttyXXX. This is not a good solution because some users
will have multiple USB to Serial converters which will use the ftdi_sio
module.
Signed-off-by: John Rogers <jgrogers@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The patch adds Huawei ETS 1220 product id into the list of supported
devices in 'option' usb serial driver.
Signed-off-by: Pavel Kazlou <p.i.kazlou@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
If the write download record failed we shouldn't return 0.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Usb serial port device is child of its usb interface device, so
we can enable async suspend of usb serial port device to speedup
system suspend.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
If the write download record failed we shouldn't return 0.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The usb serial driver initialization tried to use the BKL to stop
driver modules from unloading, but that didn't work anyways.
There was already some code to do proper try_module_get,
but it was conditional on having a new probe interface.
I checked all the low level drivers and they all have proper
.owner = THIS_MODULE, so it's ok to always use.
The other problem was the usb_serial_driver_list needing
protection by a lock. This was broken anyways because unregister
did not necessarily have the BKL.
I extended the extending table_lock mutex to protect this case too.
With these changes the BKL can be removed here.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
ipaq already had this device id defined:
{ USB_DEVICE(0x0BB4, 0x00CF) }, /* HTC USB Modem */
Revert the commit which adds the duplicate entry.
This reverts commit 04cab13293.
Originally-by: Ben Collins <ben.collins@canonical.com>
Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
AMOI_VENDOR_ID is defined twice. Remove the duplicate entry and move
the AMOI_PRODUCT_9508 definition to be grouped with the other AMOI
product definitions.
Originally-by: Ben Collins <ben.collins@ubuntu.com>
Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This now refcounts but doesn't actually check the reference was obtained in
all the places it should.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
RT Systems has put out bunch of ham radio cables based on the FT232RL
chip. Each cable type has a unique PID, this adds one for the Yaesu VX-7
radios.
Signed-off-by: Corey Minyard <minyard@acm.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
usbserial: Add AMOI Skypephone S2 support.
This patch adds support for the AMOI Skypephone S2 to the usbserial module.
Tested-by: Dennis Jansen <Dennis.Jansen@web.de>
Signed-off-by: Dennis Jansen <Dennis.Jansen@web.de>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Adds support for the Generic Qualcomm Gobi 2000 WWAN UMTS/CDMA modem
Signed-off-by: Andrew Bird <ajb@spheresytems.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
ftdi_sio: support for Signalyzer tools based on FTDI chips
This patch adds support for the Xverve Signalyzers.
Signed-off-by: Colin Leitner <colin.leitner@googlemail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Add VID/PID for Sierra Wireless 250U USB dongle to sierra.c
Allows use of 3G radio only
Signed-off-by: August Huber <gus@pbx.org>
Cc: Elina Pasheva <epasheva@sierrawireless.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch adds missing kfree(data) before return -ENODEV.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch corrects a problem with the merge of a previous
patch to add the CONTEC identifier.
I believe the merge problem occurred with the commit:
dee5658b48
Originally I submitted a patch and then they asked me to order the IDs
and resubmit, so did I. But unfortunately in the end somehow both
patches were merged.
Signed-off-by: Daniel Sangorrin <daniel.sangorrin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
If port is NULL, then the call to dev_err will dereference a value that is
a small offset from NULL.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@r exists@
expression E,E1;
identifier f;
statement S1,S2,S3;
@@
if ((E == NULL && ...) || ...)
{
... when != if (...) S1 else S2
when != E = E1
* E->f
... when any
return ...;
}
else S3
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Call set_mctrl() and clear_mctrl() according to the flow control mode
selected. This makes serial communication for FT232 connected devices
work when CRTSCTS is not set.
This fixes a regression introduced by 4175f3e31 ("tty_port: If we are
opened non blocking we still need to raise the carrier"). This patch
calls the low-level driver's dtr_rts() function which consequently sets
TIOCM_DTR | TIOCM_RTS. A later call to set_termios() without CRTSCTS in
cflags, however, does not reset these bits, and so data is not actually
sent out on the serial wire.
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Johan Hovold <jhovold@gmail.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Length field of header was incorrectly set to available payload space
rather than the actual payload size.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Kill custom read and write implementations (static per-port,
singleton(!) urb pool).
Also remove changelog header (can be retrieved through git).
Read processing and write-buffer handling tested using a cp210x device
in a loopback setup.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Private data was not freed on error path in startup.
Cc: stable <stable@kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Clean up read processing logic.
Tested using a cp210x device in a loopback setup.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Kill custom single-urb write implementation.
Note that this driver still depended on the write callback from the old
generic framework.
Tested against original read processing using a cp210x device in a
loopback setup.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Kill private write fifo and use port fifo instead (protected under
port lock).
Compile-only tested.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Kill custom fifo implementation.
Use private write fifo to minimise changes to lock handling.
Compile-only tested.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Kill custom fifo implementation.
Note that cypress_m8 has no port write fifo as it has no bulk-out
endpoint.
Compile-only tested.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Use bulk_out_size in usb_serial_driver to set urb buffer size.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Increase the bulk-out buffer size to avoid any regression in throughput
after replacing the old writing scheme which used dynamic buffers (e.g.
up to 2k).
256b has been determined to be a good choice for several drivers
including ftdi_sio which used to have a more or less identical write
implementation.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Use process_read_urb to implement line status handling.
Compile-only tested.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
