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From: Tony Lindgren <tony@atomide.com>
To: Daniel Lezcano <daniel.lezcano@linaro.org>,
	Thomas Gleixner <tglx@linutronix.de>
Cc: Keerthy <j-keerthy@ti.com>,
	linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	Lokesh Vutla <lokeshvutla@ti.com>
Subject: [PATCH] clocksource/drivers/timer-ti-dm: Drop unnecessary restore
Date: Tue, 18 May 2021 10:53:06 +0300	[thread overview]
Message-ID: <20210518075306.35532-1-tony@atomide.com> (raw)

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 <lokeshvutla@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 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

WARNING: multiple messages have this Message-ID (diff)
From: Tony Lindgren <tony@atomide.com>
To: Daniel Lezcano <daniel.lezcano@linaro.org>,
	Thomas Gleixner <tglx@linutronix.de>
Cc: Keerthy <j-keerthy@ti.com>,
	linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	Lokesh Vutla <lokeshvutla@ti.com>
Subject: [PATCH] clocksource/drivers/timer-ti-dm: Drop unnecessary restore
Date: Tue, 18 May 2021 10:53:06 +0300	[thread overview]
Message-ID: <20210518075306.35532-1-tony@atomide.com> (raw)

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 <lokeshvutla@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 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

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             reply	other threads:[~2021-05-18  7:53 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-18  7:53 Tony Lindgren [this message]
2021-05-18  7:53 ` [PATCH] clocksource/drivers/timer-ti-dm: Drop unnecessary restore Tony Lindgren
2021-06-18 16:03 ` [tip: timers/core] " tip-bot2 for Tony Lindgren

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