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When the ATN (Attention) line is asserted during a read we get a NIUSB_ATN_STATE_ERROR during a read. For the controller to send a device clear it asserts ATN. Normally this is an error but in the case of a device clear it should be regarded as an interrupt. Return -EINTR when the Device Clear Active State (DCAS) is entered else signal an error with dev_dbg with status instead of just dev_err. Signed-off-by: Dave Penkler <dpenkler@gmail.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.