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authorRafael J. Wysocki <rjw@sisk.pl>2011-02-08 23:26:02 +0100
committerRafael J. Wysocki <rjw@sisk.pl>2011-03-15 00:43:14 +0100
commitcb8f51bdadb7969139c2e39c2defd4cde98c1ea8 (patch)
treea6d6e20878460d50b8f61d5fe3237818c54065eb /drivers/acpi/Kconfig
parent4681b17154b3fd81f898802262985f662344e6ed (diff)
PM: Do not create wakeup sysfs files for devices that cannot wake up
Currently, wakeup sysfs attributes are created for all devices, regardless of whether or not they are wakeup-capable. This is excessive and complicates wakeup device identification from user space (i.e. to identify wakeup-capable devices user space has to read /sys/devices/.../power/wakeup for all devices and see if they are not empty). Fix this issue by avoiding to create wakeup sysfs files for devices that cannot wake up the system from sleep states (i.e. whose power.can_wakeup flags are unset during registration) and modify device_set_wakeup_capable() so that it adds (or removes) the relevant sysfs attributes if a device's wakeup capability status is changed. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'drivers/acpi/Kconfig')
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