From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9C0613BE641; Fri, 10 Apr 2026 12:18:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775823526; cv=none; b=d+0G3opLrnTDTxnRRnCeBqrNjRHTlu5iL3dUtgwQJAxS/F2R8+k6kSXE25K/32/Y8YnPewP7AumrzS4NtrAprBJ5JkAJ1skRVTQ3+nb2Q/6iXrGFCBgmwxD5iviZJkqaSC6je3qKuLYv+wj/RXoA70mLCvK4xvoTEVVIYAEpBPQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775823526; c=relaxed/simple; bh=OWF9pG0hQ95RygMnh7+vDhgeHyKnJRYOWEj0GBEdTEY=; h=Date:Message-ID:From:To:Subject:References:MIME-Version: Content-Type:cc; b=OKMh6y6fSS910YwmmiPAxypbiUB1DxEjJ5wW23jEBHA2z45tNB+tamOFJ/+eiIkjHg/kfp2YozPwHWNlzX7FHKnb/hxmZ+2lPXP4kQ9DM8TYunRqORTLToK480cY3+8GXwAmrCIkMKHcz1RyxLYqImQXYPgkb3Uh3tbYvlbjfHs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gYJITPmd; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="gYJITPmd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 51EC1C2BCB0; Fri, 10 Apr 2026 12:18:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775823526; bh=OWF9pG0hQ95RygMnh7+vDhgeHyKnJRYOWEj0GBEdTEY=; h=Date:From:To:Subject:References:cc:From; b=gYJITPmdy2GNPsbI6AD2iZ7zhMgePGS+gqPbXQCs7WsAhhu/qyX8hH+Xi69K/urPl BoSeBlt4BbqU4ZnISQ8slAdj5VCjiDRcN9bfEzsBBE9dj/wWUHwDFECfvHb21gTPQ5 cvjmyUKF+jJ25R6iZ5vAzO3xaA8XXwp+1aea+F9V1esc/zHHX5PN7paJBTByHcDBl2 auQKRV9dXMsXdujNzqathwxe2n8RWyCswG/DXqH2EllhOxm/ndPsrTIJX4WzacriA/ t/DalYn89VnEQy6E+ROiviOqorgI/E12LPFkiSGiJSdwmaaiky6k8Wx7OG7Y+w6GUr Ni5ruNMG7XCYg== Date: Fri, 10 Apr 2026 14:18:42 +0200 Message-ID: <20260410120317.776571540@kernel.org> User-Agent: quilt/0.68 From: Thomas Gleixner To: LKML Subject: [patch 03/38] x86/apm: Remove last LATCH usage References: <20260410120044.031381086@kernel.org> Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 cc: Arnd Bergmann , x86@kernel.org, Lu Baolu , iommu@lists.linux.dev, Michael Grzeschik , netdev@vger.kernel.org, linux-wireless@vger.kernel.org, Herbert Xu , linux-crypto@vger.kernel.org, Vlastimil Babka , linux-mm@kvack.org, David Woodhouse , Bernie Thompson , linux-fbdev@vger.kernel.org, "Theodore Tso" , linux-ext4@vger.kernel.org, Andrew Morton , Uladzislau Rezki , Marco Elver , Dmitry Vyukov , kasan-dev@googlegroups.com, Andrey Ryabinin , Thomas Sailer , linux-hams@vger.kernel.org, "Jason A. Donenfeld" , Richard Henderson , linux-alpha@vger.kernel.org, Russell King , linux-arm-kernel@lists.infradead.org, Catalin Marinas , Huacai Chen , loongarch@lists.linux.dev, Geert Uytterhoeven , linux-m68k@lists.linux-m68k.org, Dinh Nguyen , Jonas Bonn , linux-openrisc@vger.kernel.org, Helge Deller , linux-parisc@vger.kernel.org, Michael Ellerman , linuxppc-dev@lists.ozlabs.org, Paul Walmsley , linux-riscv@lists.infradead.org, Heiko Carstens , linux-s390@vger.kernel.org, "David S. Miller" , sparclinux@vger.kernel.org LATCH is a historical leftover and has been replaced with PIT_LATCH in all other places a decade ago. Replace the last holdout and remove the definition from jiffies.h. This allows to remove the otherwise unused CLOCK_TICK_RATE define in the next step. Signed-off-by: Thomas Gleixner --- arch/x86/kernel/apm_32.c | 4 ++-- include/linux/jiffies.h | 3 --- 2 files changed, 2 insertions(+), 5 deletions(-) --- a/arch/x86/kernel/apm_32.c +++ b/arch/x86/kernel/apm_32.c @@ -1196,9 +1196,9 @@ static void reinit_timer(void) /* set the clock to HZ */ outb_p(0x34, PIT_MODE); /* binary, mode 2, LSB/MSB, ch 0 */ udelay(10); - outb_p(LATCH & 0xff, PIT_CH0); /* LSB */ + outb_p(PIT_LATCH & 0xff, PIT_CH0); /* LSB */ udelay(10); - outb_p(LATCH >> 8, PIT_CH0); /* MSB */ + outb_p(PIT_LATCH >> 8, PIT_CH0); /* MSB */ udelay(10); raw_spin_unlock_irqrestore(&i8253_lock, flags); #endif --- a/include/linux/jiffies.h +++ b/include/linux/jiffies.h @@ -56,9 +56,6 @@ #define SH_DIV(NOM,DEN,LSH) ( (((NOM) / (DEN)) << (LSH)) \ + ((((NOM) % (DEN)) << (LSH)) + (DEN) / 2) / (DEN)) -/* LATCH is used in the interval timer and ftape setup. */ -#define LATCH ((CLOCK_TICK_RATE + HZ/2) / HZ) /* For divider */ - extern void register_refined_jiffies(long clock_tick_rate); /* TICK_USEC is the time between ticks in usec */