From patchwork Thu May 28 15:54:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Lindgren X-Patchwork-Id: 11576261 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1F7581391 for ; Thu, 28 May 2020 15:55:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1303C207F9 for ; Thu, 28 May 2020 15:55:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404629AbgE1Py7 (ORCPT ); Thu, 28 May 2020 11:54:59 -0400 Received: from muru.com ([72.249.23.125]:56036 "EHLO muru.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404654AbgE1Py6 (ORCPT ); Thu, 28 May 2020 11:54:58 -0400 Received: from hillo.muru.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTP id 68BF380BF; Thu, 28 May 2020 15:55:47 +0000 (UTC) From: Tony Lindgren To: linux-omap@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, Arnd Bergmann Subject: [PATCH] ARM: OMAP2+: Fix regression for using local timer on non-SMP SoCs Date: Thu, 28 May 2020 08:54:53 -0700 Message-Id: <20200528155453.8585-1-tony@atomide.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org On am437x we use also an ARM timer in addition to the dmtimer. As am437x is not an SMP SoC, we need tick_broadcast() implemented. With the recent dmtimer changes, Arnd started to see link failures for non-SMP am437x configuration: kernel/time/tick-broadcast.o: in function `tick_device_uses_broadcast': tick-broadcast.c:(.text+0x130): undefined reference to `tick_broadcast' Let's fix the issue by reverting dmtimer related changes that started building timer.c only for CONFIG_SOC_HAS_REALTIME_COUNTER. We still always need timer.c built-in for omap5 and dra7 for timer_probe(). And let's also move am437x tick_broadcast() to board-generic.c as that's where we now call timer_probe() for am437x. This way we avoid adding back more ifdefs to timer.c. Fixes: 2ee04b88547a ("ARM: OMAP2+: Drop old timer code for dmtimer and 32k counter") Reported-by: Arnd Bergmann Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/Makefile | 6 ++++-- arch/arm/mach-omap2/board-generic.c | 7 +++++++ arch/arm/mach-omap2/timer.c | 19 ++++++++++--------- 3 files changed, 21 insertions(+), 11 deletions(-) diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -16,8 +16,6 @@ hwmod-common = omap_hwmod.o omap_hwmod_reset.o \ clock-common = clock.o secure-common = omap-smc.o omap-secure.o -obj-$(CONFIG_SOC_HAS_REALTIME_COUNTER) += timer.o - obj-$(CONFIG_ARCH_OMAP2) += $(omap-2-3-common) $(hwmod-common) obj-$(CONFIG_ARCH_OMAP3) += $(omap-2-3-common) $(hwmod-common) $(secure-common) obj-$(CONFIG_ARCH_OMAP4) += $(hwmod-common) $(secure-common) @@ -48,6 +46,10 @@ obj-$(CONFIG_SOC_OMAP5) += $(omap-4-5-common) $(smp-y) sleep44xx.o obj-$(CONFIG_SOC_AM43XX) += $(omap-4-5-common) obj-$(CONFIG_SOC_DRA7XX) += $(omap-4-5-common) $(smp-y) sleep44xx.o +omap5-dra7-common = timer.o +obj-$(CONFIG_SOC_OMAP5) += $(omap5-dra7-common) +obj-$(CONFIG_SOC_DRA7XX) += $(omap5-dra7-common) + # Functions loaded to SRAM obj-$(CONFIG_SOC_OMAP2420) += sram242x.o obj-$(CONFIG_SOC_OMAP2430) += sram243x.o diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c --- a/arch/arm/mach-omap2/board-generic.c +++ b/arch/arm/mach-omap2/board-generic.c @@ -39,6 +39,13 @@ void __init __maybe_unused omap_init_time_of(void) timer_probe(); } +/* Used by am437x for ARM timer in non-SMP configurations */ +#if !defined(CONFIG_SMP) && defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) +void tick_broadcast(const struct cpumask *mask) +{ +} +#endif + #ifdef CONFIG_SOC_OMAP2420 static const char *const omap242x_boards_compat[] __initconst = { "ti,omap2420", diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c --- a/arch/arm/mach-omap2/timer.c +++ b/arch/arm/mach-omap2/timer.c @@ -39,6 +39,8 @@ #define INCREMENTER_DENUMERATOR_RELOAD_OFFSET 0x14 #define NUMERATOR_DENUMERATOR_MASK 0xfffff000 +#ifdef CONFIG_SOC_HAS_REALTIME_COUNTER + static unsigned long arch_timer_freq; void set_cntfreq(void) @@ -46,14 +48,6 @@ void set_cntfreq(void) omap_smc1(OMAP5_DRA7_MON_SET_CNTFRQ_INDEX, arch_timer_freq); } -#if !defined(CONFIG_SMP) && defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) -void tick_broadcast(const struct cpumask *mask) -{ -} -#endif - -#if defined(CONFIG_SOC_OMAP5) || defined(CONFIG_SOC_DRA7XX) - /* * The realtime counter also called master counter, is a free-running * counter, which is related to real time. It produces the count used @@ -165,6 +159,14 @@ static void __init realtime_counter_init(void) iounmap(base); } +#else + +static inline void realtime_counter_init(void) +{ +} + +#endif /* CONFIG_SOC_HAS_REALTIME_COUNTER */ + void __init omap5_realtime_timer_init(void) { omap_clk_init(); @@ -172,4 +174,3 @@ void __init omap5_realtime_timer_init(void) timer_probe(); } -#endif /* CONFIG_SOC_OMAP5 || CONFIG_SOC_DRA7XX */