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fe57d1e113
The `insn_write` handler for the calibration subdevice (`ni_calib_insn_write()`) currently ignores `insn->n` (the number of samples to write) and assumes a single sample is to be written, but `insn->n` could be 0, meaning no samples should be written, in which case `data[0]` is invalid. Change `ni_calib_insn_write()` to only write to the calibration device if `insn->n > 0`. There isn't much point writing all the values when `insn->n > 1`, so just write the last one (`data[insn->n - 1]`). Also follow the usual Comedi convention and return `insn->n` from the handler to indicate success (although any non-negative return value will do as far as the Comedi core is concerned). Signed-off-by: Ian Abbott <abbotti@mev.co.uk> 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 Restructured Text 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.