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ACPI: VIDEO: Adjust current level to closest available one. 

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
hifive-unleashed-5.1
Alexey Starikovskiy 2007-09-03 16:30:08 +04:00 committed by Len Brown
parent 4500ca8e22
commit 63f0edfc0b
1 changed files with 12 additions and 1 deletions
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13
drivers/acpi/video.c
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@ -1636,9 +1636,20 @@ static int
acpi_video_get_next_level(struct acpi_video_device *device,
u32 level_current, u32 event)
{
int min, max, min_above, max_below, i, l;
int min, max, min_above, max_below, i, l, delta = 255;
max = max_below = 0;
min = min_above = 255;
/* Find closest level to level_current */
for (i = 0; i < device->brightness->count; i++) {
l = device->brightness->levels[i];
if (abs(l - level_current) < abs(delta)) {
delta = l - level_current;
if (!delta)
break;
}
}
/* Ajust level_current to closest available level */
level_current += delta;
for (i = 0; i < device->brightness->count; i++) {
l = device->brightness->levels[i];
if (l < min)