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commit0187294d22upstream. When devm_regmap_init_i2c() returns an error code, a pairing runtime PM usage counter decrement is needed to keep the counter balanced. For error paths after ak8974_set_power(), ak8974_detect() and ak8974_reset(), things are the same. However, When iio_triggered_buffer_setup() returns an error code, there will be two PM usgae counter decrements. Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn> Fixes:7c94a8b2ee("iio: magn: add a driver for AK8974") Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 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.