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The ADS1015 device have two operating modes, continuous conversion mode and single-shot mode. This driver assumes that the continuous conversion mode is selected by runtime resume callback when the ADC result is requested. If CONFIG_PM is disabled, the device is always in the default single-shot mode and no one begins a single conversion. So the conversion register doesn't contain valid ADC result. Fix it by changing the continuous mode in probe function. Cc: Daniel Baluta <daniel.baluta@gmail.com> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.