From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753055Ab3AXDaa (ORCPT ); Wed, 23 Jan 2013 22:30:30 -0500 Received: from youngberry.canonical.com ([91.189.89.112]:44298 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754015Ab3AXDaF (ORCPT ); Wed, 23 Jan 2013 22:30:05 -0500 From: Herton Ronaldo Krzesinski To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Axel Lin , Mark Brown , Herton Ronaldo Krzesinski Subject: [PATCH 39/74] regulator: max8998: Ensure enough delay time for max8998_set_voltage_buck_time_sel Date: Thu, 24 Jan 2013 01:26:51 -0200 Message-Id: <1358998046-613-40-git-send-email-herton.krzesinski@canonical.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1358998046-613-1-git-send-email-herton.krzesinski@canonical.com> References: <1358998046-613-1-git-send-email-herton.krzesinski@canonical.com> X-Extended-Stable: 3.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.5.7.4 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Axel Lin commit 81d0a6ae7befb24c06f4aa4856af7f8d1f612171 upstream. Use DIV_ROUND_UP to prevent truncation by integer division issue. This ensures we return enough delay time. Signed-off-by: Axel Lin Signed-off-by: Mark Brown Signed-off-by: Herton Ronaldo Krzesinski --- drivers/regulator/max8998.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/regulator/max8998.c b/drivers/regulator/max8998.c index 5e56df0..b3b2984 100644 --- a/drivers/regulator/max8998.c +++ b/drivers/regulator/max8998.c @@ -447,7 +447,7 @@ static int max8998_set_voltage_buck_time_sel(struct regulator_dev *rdev, difference = (new_selector - old_selector) * desc->step / 1000; if (difference > 0) - return difference / ((val & 0x0f) + 1); + return DIV_ROUND_UP(difference, (val & 0x0f) + 1); return 0; } -- 1.7.9.5