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Instead of relying on a mix of runtime PM and the s_power() callback, drop the s_power() callback altogether and use runtime PM solely. As device access is required during device power-on and power-off sequences, runtime PM alone cannot tell whether the device is available. Thus the "active" field is introduced in struct smiapp_sensor to tell whether it is safe to write to the device. Consequently there is no need to power on the device whenever a file handle is open. This functionality is removed as well. The user may still control the device power management through sysfs. Autosuspend remains enabled, with 1 s delay. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com> |
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| drivers | ||
| firmware | ||
| fs | ||
| include | ||
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| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
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| .cocciconfig | ||
| .get_maintainer.ignore | ||
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| COPYING | ||
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| Kbuild | ||
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| README | ||
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.