From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756548AbaKSSjl (ORCPT ); Wed, 19 Nov 2014 13:39:41 -0500 Received: from mail.kernel.org ([198.145.19.201]:35382 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756409AbaKSSjj (ORCPT ); Wed, 19 Nov 2014 13:39:39 -0500 From: Kevin Hilman To: Thomas Gleixner , Viresh Kumar Cc: linaro-kernel@lists.linaro.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Frederic Weisbecker , preeti@linux.vnet.ibm.com, daniel.lezcano@linaro.org, Kevin Hilman Subject: [PATCH 0/2] clockevents: introduce ->set_dev_mode() and convert a few drivers Date: Wed, 19 Nov 2014 10:39:35 -0800 Message-Id: <1416422377-13615-1-git-send-email-khilman@kernel.org> X-Mailer: git-send-email 2.1.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kevin Hilman Currently, the ->set_mode() method of a clockevent device is not allowed to fail, so it has no return value. In order to add new clockevent modes, and allow the setting of those modes to fail, we need the clockevent core to be able to detect when setting a mode fails. Rather than changing the current ->set_mode() and requiring all clockevent devices to change immedately, introduce a new mode setting method ->set_dev_mode() which returns 'int'. In addition, migrate a few drivers over to the new method to demonstrate how the new method is to be used, and how to convert. Proposal for new method originally suggested by Thomas Gleixner[1]. [1] https://lkml.org/lkml/2014/5/10/86 Viresh Kumar (2): clockevents: introduce ->set_dev_mode() which can return error clockevents: migrate some drivers to new ->set_dev_mode() drivers/clocksource/arm_arch_timer.c | 46 +++++++++++++++++--------------- drivers/clocksource/bcm2835_timer.c | 10 +++---- drivers/clocksource/bcm_kona_timer.c | 15 ++++++++--- drivers/clocksource/i8253.c | 11 +++++--- drivers/clocksource/time-armada-370-xp.c | 21 +++++++++++---- include/linux/clockchips.h | 5 +++- kernel/time/clockevents.c | 21 ++++++++++++--- kernel/time/timer_list.c | 5 +++- 8 files changed, 91 insertions(+), 43 deletions(-) -- 2.1.3