linux/drivers/usb/class, branch v4.7

tty: Replace ASYNC_INITIALIZED bit and update atomically

2016-04-30T16:26:55Z

Replace ASYNC_INITIALIZED bit in the tty_port::flags field with TTY_PORT_INITIALIZED bit in the tty_port::iflags field. Introduce helpers tty_port_set_initialized() and tty_port_initialized() to abstract atomic bit ops. Note: the transforms for test_and_set_bit() and test_and_clear_bit() are unnecessary as the state transitions are already mutually exclusive; the tty lock prevents concurrent open/close/hangup. Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman

cdc-acm: fix crash if flushed with nothing buffered

2016-04-13T18:53:07Z

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

2016-03-18T16:19:02Z

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

2016-02-21T04:21:53Z

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()

2016-02-15T01:06:43Z

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

2016-02-03T21:54:06Z

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

2016-02-03T21:54:06Z

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

2016-02-03T21:54:06Z

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

2016-02-03T21:54:06Z

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.

2016-02-03T21:54:06Z

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