From: Alexey Starikovskiy Date: Thu, 15 Nov 2007 07:04:29 +0000 (+0100) Subject: ACPI: VIDEO: Adjust current level to closest available one. X-Git-Tag: v2.6.23.9~16 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=77675886269b9af9f88d2fcea2fe1a3d02af0f6e;p=thirdparty%2Fkernel%2Fstable.git ACPI: VIDEO: Adjust current level to closest available one. patch 63f0edfc0b7f8058f9d3f9b572615ec97ae011ba in mainline. ACPI: VIDEO: Adjust current level to closest available one. Signed-off-by: Alexey Starikovskiy Signed-off-by: Len Brown Cc: Tobias Powalowski Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index d05891f162823..dad84c00ae438 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -1633,9 +1633,20 @@ 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)