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| author | Emilio López <turl@tuxfamily.org> | 2012-08-30 20:28:35 +0000 |
|---|---|---|
| committer | Emilio López <turl@tuxfamily.org> | 2012-08-30 20:42:29 +0000 |
| commit | 1829e5cf55c9d7e9bda7da72be17a0e7dedaf3d9 (patch) | |
| tree | 06a199e84ab621f521aa260f1dab5ef485a4e367 /power | |
| parent | ed067655c1475f42800682eb6fe672169c38229e (diff) | |
| download | device_samsung_tuna-1829e5cf55c9d7e9bda7da72be17a0e7dedaf3d9.zip device_samsung_tuna-1829e5cf55c9d7e9bda7da72be17a0e7dedaf3d9.tar.gz device_samsung_tuna-1829e5cf55c9d7e9bda7da72be17a0e7dedaf3d9.tar.bz2 | |
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.
Diffstat (limited to 'power')
| -rw-r--r-- | power/power_tuna.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/power/power_tuna.c b/power/power_tuna.c index 0a2aa8f..80330a1 100644 --- a/power/power_tuna.c +++ b/power/power_tuna.c @@ -135,7 +135,13 @@ 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", |