mirror of https://github.com/torvalds/linux.git
228b9deded
The recently introduced support for freezing filesystems during system
suspend included calls to filesystems_freeze() in both suspend_prepare()
and enter_state(), as well as calls to filesystems_thaw() in both
suspend_finish() and the Unlock path in enter_state(). These are
redundant.
Moreover, calling filesystems_freeze() twice, from both suspend_prepare()
and enter_state(), leads to a black screen and makes the system unable
to resume in some cases.
Address this as follows:
- filesystems_freeze() is already called in suspend_prepare(), which
is the proper and consistent place to handle pre-suspend operations.
The second call in enter_state() is unnecessary and so remove it.
- filesystems_thaw() is invoked in suspend_finish(), which covers
successful suspend/resume paths. In the failure case, add a call
to filesystems_thaw() only when needed, avoiding the duplicate call
in the general Unlock path.
This change simplifies the suspend code and avoids repeated freeze/thaw
calls, while preserving correct ordering and behavior.
Fixes:
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|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| autosleep.c | ||
| console.c | ||
| energy_model.c | ||
| hibernate.c | ||
| main.c | ||
| power.h | ||
| poweroff.c | ||
| process.c | ||
| qos.c | ||
| snapshot.c | ||
| suspend.c | ||
| suspend_test.c | ||
| swap.c | ||
| user.c | ||
| wakelock.c | ||