[PATCH] PM: sleep: Drop superfluous might_sleep() calls

From: Zhongqiu Han
Date: Tue Jun 17 2025 - 04:47:20 EST


Drop superfluous might_sleep() calls from dpm_resume(), dpm_complete(),
and dpm_prepare(). These functions already invoke primitives that
implicitly check for sleep in atomic context:

- dpm_resume() and dpm_complete() invoke mutex_lock(), which internally
triggers might_sleep()
- dpm_prepare() calls wait_for_device_probe(), which internally uses
flush_work(), and thus might_sleep()

These annotations are unnecessary and can be dropped to reduce clutter.

Signed-off-by: Zhongqiu Han <quic_zhonhan@xxxxxxxxxxx>
---
drivers/base/power/main.c | 3 ---
1 file changed, 3 deletions(-)

diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index eebe699fdf4f..0f40c00c1401 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -1095,7 +1095,6 @@ void dpm_resume(pm_message_t state)
ktime_t starttime = ktime_get();

trace_suspend_resume(TPS("dpm_resume"), state.event, true);
- might_sleep();

pm_transition = state;
async_error = 0;
@@ -1198,7 +1197,6 @@ void dpm_complete(pm_message_t state)
struct list_head list;

trace_suspend_resume(TPS("dpm_complete"), state.event, true);
- might_sleep();

INIT_LIST_HEAD(&list);
mutex_lock(&dpm_list_mtx);
@@ -2109,7 +2107,6 @@ int dpm_prepare(pm_message_t state)
int error = 0;

trace_suspend_resume(TPS("dpm_prepare"), state.event, true);
- might_sleep();

/*
* Give a chance for the known devices to complete their probes, before
--
2.43.0