linux-toradex.git/drivers/usb/class, branch v4.6-rc6

cdc-acm: fix crash if flushed with nothing buffered

2016-04-13T18:53:07+00:00

Under some circumstances acm_tty_flush_chars() is called
with no buffer to flush. We simply need to do nothing.

Signed-off-by: Oliver Neukum 
Reported-by: Torsten Hilbrich 
Signed-off-by: Greg Kroah-Hartman

USB: cdc-acm: more sanity checking

2016-03-18T16:19:02+00:00

An attack has become available which pretends to be a quirky
device circumventing normal sanity checks and crashes the kernel
by an insufficient number of interfaces. This patch adds a check
to the code path for quirky devices.

Signed-off-by: Oliver Neukum 
CC: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman

usb: usbtmc: Fix disconnect/poll interaction

2016-02-21T04:21:53+00:00

When the device is disconnected poll waiters were not being woken.

Changes for v2:
  - add commit summary
  - add Fixes and Reported-by tags

Fixes: eb6b92ecc0f9 ("Add support for receiving USBTMC USB488 SRQ notifications via poll/select")
Reported-by: Oliver Neukum 
Signed-off-by: Dave Penkler 
Signed-off-by: Greg Kroah-Hartman

cdc-acm: implement put_char() and flush_chars()

2016-02-15T01:06:43+00:00

This should cut down latencies and waste if the tty layer writes single bytes.

Signed-off-by: Oliver Neukum >oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman

Add ioctls to enable and disable local controls on an instrument

2016-02-03T21:54:06+00:00

These ioctls provide support for the USBTMC-USB488 control requests
for REN_CONTROL, GO_TO_LOCAL and LOCAL_LOCKOUT

Signed-off-by: Dave Penkler 
Signed-off-by: Greg Kroah-Hartman

Add ioctl to retrieve USBTMC-USB488 capabilities

2016-02-03T21:54:06+00:00

This is a convenience function to obtain an instrument's
capabilities from its file descriptor without having to access sysfs
from the user program.

Signed-off-by: Dave Penkler 
Signed-off-by: Greg Kroah-Hartman

Add support for receiving USBTMC USB488 SRQ notifications via poll/select

2016-02-03T21:54:06+00:00

Background:
In many situations operations on multiple instruments need to be
synchronized. poll/select provide a convenient way of waiting on a
number of different instruments and other peripherals
simultaneously.

Signed-off-by: Dave Penkler 
Signed-off-by: Greg Kroah-Hartman

Add support for USBTMC USB488 SRQ notification with fasync

2016-02-03T21:54:06+00:00

Background:
By configuring an instrument's event status register various
conditions can be reported via an SRQ notification. This complements
the synchronous polling approach using the READ_STATUS_BYTE ioctl
with an asynchronous notification.

Signed-off-by: Dave Penkler 
Signed-off-by: Greg Kroah-Hartman

Implement an ioctl to support the USMTMC-USB488 READ_STATUS_BYTE operation.

2016-02-03T21:54:06+00:00

Background:
When performing a read on an instrument that is executing a function
that runs longer than the USB timeout the instrument may hang and
require a device reset to recover. The READ_STATUS_BYTE operation
always returns even when the instrument is busy permitting to poll
for the appropriate condition. This capability is referred to in
instrument application notes on synchronizing acquisitions for other
platforms.

Signed-off-by: Dave Penkler 
Signed-off-by: Greg Kroah-Hartman

cdc-acm:exclude Samsung phone 04e8:685d

2016-01-25T05:06:21+00:00

This phone needs to be handled by a specialised firmware tool
and is reported to crash irrevocably if cdc-acm takes it.

Signed-off-by: Oliver Neukum 
CC: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman