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author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-05-16 13:43:19 +0300 |
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committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-05-27 11:51:45 +0300 |
commit | bb1869012d7b78d1474808cb4c8bd8b272645876 (patch) | |
tree | 1df9a6c5b0a5511970caff3c491de0beac10e579 /include/linux/suspend.h | |
parent | 9a51c6b1f9e0239a9435db036b212498a2a3b75c (diff) | |
download | linux-bb1869012d7b78d1474808cb4c8bd8b272645876.tar.xz |
ACPI: PM: Call pm_set_suspend_via_firmware() during hibernation
On systems with ACPI platform firmware the last stage of hibernation
is analogous to system suspend to S3 (suspend-to-RAM), so it should
be handled analogously. In particular, pm_suspend_via_firmware()
should return 'true' in that stage to let the callers of it know that
control will be passed to the platform firmware going forward, so
pm_set_suspend_via_firmware() needs to be called then in analogy with
acpi_suspend_begin().
However, the platform hibernation ->begin() callback is invoked
during the "freeze" transition (before creating a snapshot image of
system memory) as well as during the "hibernate" transition which is
the last stage of it and pm_set_suspend_via_firmware() should be
invoked by that callback in the latter stage only.
In order to implement that redefine the hibernation ->begin()
callback to take a pm_message_t argument to indicate which stage
of hibernation is taking place and rework acpi_hibernation_begin()
and acpi_hibernation_begin_old() to take it into account as needed.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/suspend.h')
-rw-r--r-- | include/linux/suspend.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 6b3ea9ea6a9e..4a2ffd678887 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -359,7 +359,7 @@ extern void mark_free_pages(struct zone *zone); * platforms which require special recovery actions in that situation. */ struct platform_hibernation_ops { - int (*begin)(void); + int (*begin)(pm_message_t stage); void (*end)(void); int (*pre_snapshot)(void); void (*finish)(void); |