From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762888AbXKTSbf (ORCPT ); Tue, 20 Nov 2007 13:31:35 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761571AbXKTS0p (ORCPT ); Tue, 20 Nov 2007 13:26:45 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:51862 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761567AbXKTS0n (ORCPT ); Tue, 20 Nov 2007 13:26:43 -0500 Date: Tue, 20 Nov 2007 10:24:23 -0800 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: Justin Forbes , Zwane Mwaikambo , "Theodore Ts'o" , Randy Dunlap , Dave Jones , Chuck Wolber , Chris Wedgwood , Michael Krufky , Chuck Ebbert , Domenico Andreoli , torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Alexey Starikovskiy , Len Brown , Tobias Powalowski Subject: [patch 14/29] ACPI: VIDEO: Adjust current level to closest available one. Message-ID: <20071120182423.GP28611@kroah.com> References: <20071120181733.702234406@mini.kroah.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline; filename="acpi-video-adjust-current-level-to-closest-available-one.patch" In-Reply-To: <20071120182248.GA28611@kroah.com> User-Agent: Mutt/1.5.16 (2007-06-09) X-Bad-Reply: References and In-Reply-To but no 'Re:' in Subject. Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org 2.6.23-stable review patch. If anyone has any objections, please let us know. ------------------ From: Alexey Starikovskiy 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 --- drivers/acpi/video.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) --- 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) --