Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S946436AbcJaWu3 (ORCPT ); Mon, 31 Oct 2016 18:50:29 -0400 Received: from us01smtprelay-2.synopsys.com ([198.182.60.111]:59305 "EHLO smtprelay.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1034604AbcJaWso (ORCPT ); Mon, 31 Oct 2016 18:48:44 -0400 From: Vineet Gupta To: Daniel Lezcano CC: , , , Noam Camus , , Vineet Gupta Subject: [PATCH 2/9] ARC: timer: rtc: implement read loop in "C" vs. inline asm Date: Mon, 31 Oct 2016 15:48:09 -0700 Message-ID: <1477954096-770-3-git-send-email-vgupta@synopsys.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1477954096-770-1-git-send-email-vgupta@synopsys.com> References: <35bde193-8492-83e0-fb03-8385d8afd007@synopsys.com> <1477954096-770-1-git-send-email-vgupta@synopsys.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.10.161.40] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 888 Lines: 33 To allow for easy movement into drivers/clocksource Signed-off-by: Vineet Gupta --- arch/arc/kernel/time.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/arch/arc/kernel/time.c b/arch/arc/kernel/time.c index a2db010cde18..2c51e3cafad0 100644 --- a/arch/arc/kernel/time.c +++ b/arch/arc/kernel/time.c @@ -153,14 +153,11 @@ static cycle_t arc_read_rtc(struct clocksource *cs) cycle_t full; } stamp; - - __asm__ __volatile( - "1: \n" - " lr %0, [AUX_RTC_LOW] \n" - " lr %1, [AUX_RTC_HIGH] \n" - " lr %2, [AUX_RTC_CTRL] \n" - " bbit0.nt %2, 31, 1b \n" - : "=r" (stamp.low), "=r" (stamp.high), "=r" (status)); + do { + stamp.low = read_aux_reg(AUX_RTC_LOW); + stamp.high = read_aux_reg(AUX_RTC_HIGH); + status = read_aux_reg(AUX_RTC_CTRL); + } while (!(status & 0x80000000UL)); return stamp.full; } -- 2.7.4