2021-05-19 16:25:39

by Tony Lindgren

[permalink] [raw]
Subject: [PATCH] clocksource/drivers/timer-ti-dm: Drop unnecessary restore

The device is not losing context on CPU_CLUSTER_PM_ERROR. As we are only
saving and restoring context with cpu_pm, there is no need to restore the
context in case of an error.

Note that the unnecessary restoring of context does not cause issues, it's
just not needed.

Cc: Lokesh Vutla <[email protected]>
Signed-off-by: Tony Lindgren <[email protected]>
---
drivers/clocksource/timer-ti-dm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/clocksource/timer-ti-dm.c b/drivers/clocksource/timer-ti-dm.c
--- a/drivers/clocksource/timer-ti-dm.c
+++ b/drivers/clocksource/timer-ti-dm.c
@@ -122,7 +122,8 @@ static int omap_timer_context_notifier(struct notifier_block *nb,
break;
omap_timer_save_context(timer);
break;
- case CPU_CLUSTER_PM_ENTER_FAILED:
+ case CPU_CLUSTER_PM_ENTER_FAILED: /* No need to restore context */
+ break;
case CPU_CLUSTER_PM_EXIT:
if ((timer->capability & OMAP_TIMER_ALWON) ||
!atomic_read(&timer->enabled))
--
2.31.1


Subject: [tip: timers/core] clocksource/drivers/timer-ti-dm: Drop unnecessary restore

The following commit has been merged into the timers/core branch of tip:

Commit-ID: 3d41fff3ae3980c055f3c7861264c46c924f3e4c
Gitweb: https://git.kernel.org/tip/3d41fff3ae3980c055f3c7861264c46c924f3e4c
Author: Tony Lindgren <[email protected]>
AuthorDate: Tue, 18 May 2021 10:53:06 +03:00
Committer: Daniel Lezcano <[email protected]>
CommitterDate: Wed, 16 Jun 2021 17:33:04 +02:00

clocksource/drivers/timer-ti-dm: Drop unnecessary restore

The device is not losing context on CPU_CLUSTER_PM_ERROR. As we are only
saving and restoring context with cpu_pm, there is no need to restore the
context in case of an error.

Note that the unnecessary restoring of context does not cause issues, it's
just not needed.

Cc: Lokesh Vutla <[email protected]>
Signed-off-by: Tony Lindgren <[email protected]>
Signed-off-by: Daniel Lezcano <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
---
drivers/clocksource/timer-ti-dm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/clocksource/timer-ti-dm.c b/drivers/clocksource/timer-ti-dm.c
index e5c631f..3e52c52 100644
--- a/drivers/clocksource/timer-ti-dm.c
+++ b/drivers/clocksource/timer-ti-dm.c
@@ -128,7 +128,8 @@ static int omap_timer_context_notifier(struct notifier_block *nb,
break;
omap_timer_save_context(timer);
break;
- case CPU_CLUSTER_PM_ENTER_FAILED:
+ case CPU_CLUSTER_PM_ENTER_FAILED: /* No need to restore context */
+ break;
case CPU_CLUSTER_PM_EXIT:
if ((timer->capability & OMAP_TIMER_ALWON) ||
!atomic_read(&timer->enabled))