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module/backlight: don't divide by zero

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This commit is contained in:
Daniel Eklöf 2019-01-13 17:40:17 +01:00
parent bc62843c91
commit f952347c84
1 changed files with 7 additions and 3 deletions
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10
modules/backlight.c
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@ -41,11 +41,15 @@ content(struct module *mod)
const struct private *m = mod->private; const struct private *m = mod->private;
mtx_lock(&mod->lock); mtx_lock(&mod->lock);
const long current = m->current_brightness;
const long max = m->max_brightness;
const long percent = max > 0 ? 100 * current / max : 0;
struct tag_set tags = { struct tag_set tags = {
.tags = (struct tag *[]){ .tags = (struct tag *[]){
tag_new_int_range( tag_new_int_range(mod, "brightness", current, 0, max),
mod, "brightness", m->current_brightness, 0, m->max_brightness), tag_new_int_range(mod, "percent", percent, 0, 100),
tag_new_int_range(mod, "percent", 100 * m->current_brightness / m->max_brightness, 0, 100),
}, },
.count = 2, .count = 2,
}; };