commit ff8c288d7d1a368b663058cdee1ea0adcdef2fa2
author Eric Piel <Eric.Piel@tremplin-utc.net> Fri Mar 10 11:34:16 2006 +0200
committer Dominik Brodowski <linux@dominikbrodowski.net> Sun Mar 26 10:43:06 2006 +0200
tree 04de5f31a6773e1663a521c1217cb494c18dfa0e
parent a159b82770ab84e1b5e0306fa65e158188492b16

[PATCH] cpufreq_ondemand: Warn if it cannot run due to too long transition latency

Display a warning if the ondemand governor can not be selected due to a
transition latency of the cpufreq driver which is too long.

Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

drivers/cpufreq/cpufreq_ondemand.c

diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 69aa1db..6430489 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -395,8 +395,11 @@
 			return -EINVAL;
 
 		if (policy->cpuinfo.transition_latency >
-				(TRANSITION_LATENCY_LIMIT * 1000))
+				(TRANSITION_LATENCY_LIMIT * 1000)) {
+			printk(KERN_WARNING "ondemand governor failed to load "
+			       "due to too long transition latency\n");
 			return -EINVAL;
+		}
 		if (this_dbs_info->enable) /* Already enabled */
 			break;