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author | Rafael J. Wysocki <rjw@sisk.pl> | 2012-05-29 19:21:07 (GMT) |
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committer | Rafael J. Wysocki <rjw@sisk.pl> | 2012-05-29 19:21:07 (GMT) |
commit | dbe9a2edd17d843d80faf2b99f20a691c1853418 (patch) | |
tree | cdb93bb64452b6e60ffd8ca1ceea75716a1e9f64 /drivers/rtc | |
parent | 38c92fff988d518fe80dc23d0d44d66bd7e47ddd (diff) | |
download | linux-dbe9a2edd17d843d80faf2b99f20a691c1853418.tar.xz |
ACPI / PM: Make acpi_pm_device_sleep_state() follow the specification
The comparison between the system sleep state being entered
and the lowest system sleep state the given device may wake up
from in acpi_pm_device_sleep_state() is reversed, because the
specification (ACPI 5.0) says that for wakeup to work:
"The sleeping state being entered must be less than or equal to the
power state declared in element 1 of the _PRW object."
In other words, the state returned by _PRW is the deepest
(lowest-power) system sleep state the device is capable of waking up
the system from.
Moreover, acpi_pm_device_sleep_state() also should check if the
wakeup capability is supported through ACPI, because in principle it
may be done via native PCIe PME, for example, in which case _SxW
should not be evaluated.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'drivers/rtc')
0 files changed, 0 insertions, 0 deletions