Merging upstream version 6.9.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 16 insertions, 10 deletions

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 86f1bc7754..66e10a19d7 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -576,17 +576,26 @@ unsigned int cpufreq_policy_transition_delay_us(struct cpufreq_policy *policy)
 
 	latency = policy->cpuinfo.transition_latency / NSEC_PER_USEC;
 	if (latency) {
+		unsigned int max_delay_us = 2 * MSEC_PER_SEC;
+
+		/*
+		 * If the platform already has high transition_latency, use it
+		 * as-is.
+		 */
+		if (latency > max_delay_us)
+			return latency;
+
 		/*
-		 * For platforms that can change the frequency very fast (< 10
+		 * For platforms that can change the frequency very fast (< 2
 		 * us), the above formula gives a decent transition delay. But
 		 * for platforms where transition_latency is in milliseconds, it
 		 * ends up giving unrealistic values.
 		 *
-		 * Cap the default transition delay to 10 ms, which seems to be
+		 * Cap the default transition delay to 2 ms, which seems to be
 		 * a reasonable amount of time after which we should reevaluate
 		 * the frequency.
 		 */
-		return min(latency * LATENCY_MULTIPLIER, (unsigned int)10000);
+		return min(latency * LATENCY_MULTIPLIER, max_delay_us);
 	}
 
 	return LATENCY_MULTIPLIER;
@@ -1670,13 +1679,10 @@ static void __cpufreq_offline(unsigned int cpu, struct cpufreq_policy *policy)
 	 */
 	if (cpufreq_driver->offline) {
 		cpufreq_driver->offline(policy);
-		return;
-	}
-
-	if (cpufreq_driver->exit)
+	} else if (cpufreq_driver->exit) {
 		cpufreq_driver->exit(policy);
-
-	policy->freq_table = NULL;
+		policy->freq_table = NULL;
+	}
 }
 
 static int cpufreq_offline(unsigned int cpu)
@@ -1734,7 +1740,7 @@ static void cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif)
 	}
 
 	/* We did light-weight exit earlier, do full tear down now */
-	if (cpufreq_driver->offline && cpufreq_driver->exit)
+	if (cpufreq_driver->offline)
 		cpufreq_driver->exit(policy);
 
 	up_write(&policy->rwsem);