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authorEmilio López <turl@tuxfamily.org>2012-08-30 20:28:35 +0000
committerZiyann <jaraidaniel@gmail.com>2014-11-14 09:06:12 +0100
commit2d25f375eff7487015f1b68c12f7292d7368b6cc (patch)
tree0a1270821c6c082afb6a7add1f781eb9d814c23b
parente040b45c8e4e54c8df9d6c714fc8164427f8a33b (diff)
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tuna: power: make sure we don't apply the screen off freq on screen on
This fixes issues when pressing the power button repeatedly in a short period of time. The "on" call might not run, and when we re-read the value on screen off to store it, we will be actually reading the capped screen off value. Make sure that's not the case.
-rw-r--r--power/power_tuna.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/power/power_tuna.c b/power/power_tuna.c
index bc996cb..c5852d7 100644
--- a/power/power_tuna.c
+++ b/power/power_tuna.c
@@ -137,7 +137,13 @@ static void tuna_power_set_interactive(struct power_module *module, int on)
/* read the current scaling max freq and save it before updating */
len = sysfs_read(SCALINGMAXFREQ_PATH, buf, sizeof(buf));
- if (len != -1)
+ /* make sure it's not the screen off freq, if the "on"
+ * call is skipped (can happen if you press the power
+ * button repeatedly) we might have read it. We should
+ * skip it if that's the case
+ */
+ if (len != -1 && strncmp(buf, screen_off_max_freq,
+ strlen(screen_off_max_freq)) != 0)
memcpy(scaling_max_freq, buf, sizeof(buf));
sysfs_write("/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq",