From patchwork Mon Jan 12 18:26:27 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Zyngier X-Patchwork-Id: 5613411 Return-Path: X-Original-To: patchwork-linux-samsung-soc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id BA8299F358 for ; Mon, 12 Jan 2015 18:27:49 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id CF37E20531 for ; Mon, 12 Jan 2015 18:27:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D330A20558 for ; Mon, 12 Jan 2015 18:27:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753951AbbALS1m (ORCPT ); Mon, 12 Jan 2015 13:27:42 -0500 Received: from foss-mx-na.foss.arm.com ([217.140.108.86]:60575 "EHLO foss-mx-na.foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752413AbbALS1i (ORCPT ); Mon, 12 Jan 2015 13:27:38 -0500 Received: from foss-smtp-na-1.foss.arm.com (unknown [10.80.61.8]) by foss-mx-na.foss.arm.com (Postfix) with ESMTP id 0CD74279; Mon, 12 Jan 2015 12:27:35 -0600 (CST) Received: from collaborate-mta1.arm.com (highbank-bc01-b06.austin.arm.com [10.112.81.134]) by foss-smtp-na-1.foss.arm.com (Postfix) with ESMTP id AE12C5FAD8; Mon, 12 Jan 2015 12:27:33 -0600 (CST) Received: from approximate.cambridge.arm.com (approximate.cambridge.arm.com [10.1.209.148]) by collaborate-mta1.arm.com (Postfix) with ESMTP id C154E13F8D8; Mon, 12 Jan 2015 12:27:30 -0600 (CST) From: Marc Zyngier To: Stephen Warren , Thierry Reding , Alexandre Courbot , Benoit Cousson , Tony Lindgren , Nishanth Menon , Santosh Shilimkar , Shawn Guo , Sascha Hauer , Kukjin Kim , Simon Horman , Magnus Damm , Linus Walleij , Michal Simek , Rob Herring , Mark Rutland , Jason Cooper , Thomas Gleixner Cc: Stefan Agner , linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-omap@vger.kernel.org Subject: [PATCH v3 21/21] irqchip: gic: Drop support for gic_arch_extn Date: Mon, 12 Jan 2015 18:26:27 +0000 Message-Id: <1421087187-26988-22-git-send-email-marc.zyngier@arm.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1421087187-26988-1-git-send-email-marc.zyngier@arm.com> References: <1421087187-26988-1-git-send-email-marc.zyngier@arm.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Now that the users of gic_arch_extn have been fixed, drop the "feature" for good. This leads to the removal of some now useless locking. Signed-off-by: Marc Zyngier --- drivers/irqchip/irq-gic.c | 54 ----------------------------------------- include/linux/irqchip/arm-gic.h | 2 -- 2 files changed, 56 deletions(-) diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c index 23fe3be..78d4dee 100644 --- a/drivers/irqchip/irq-gic.c +++ b/drivers/irqchip/irq-gic.c @@ -80,19 +80,6 @@ static DEFINE_RAW_SPINLOCK(irq_controller_lock); #define NR_GIC_CPU_IF 8 static u8 gic_cpu_map[NR_GIC_CPU_IF] __read_mostly; -/* - * Supported arch specific GIC irq extension. - * Default make them NULL. - */ -struct irq_chip gic_arch_extn = { - .irq_eoi = NULL, - .irq_mask = NULL, - .irq_unmask = NULL, - .irq_retrigger = NULL, - .irq_set_type = NULL, - .irq_set_wake = NULL, -}; - #ifndef MAX_GIC_NR #define MAX_GIC_NR 1 #endif @@ -155,32 +142,18 @@ static void gic_mask_irq(struct irq_data *d) { u32 mask = 1 << (gic_irq(d) % 32); - raw_spin_lock(&irq_controller_lock); writel_relaxed(mask, gic_dist_base(d) + GIC_DIST_ENABLE_CLEAR + (gic_irq(d) / 32) * 4); - if (gic_arch_extn.irq_mask) - gic_arch_extn.irq_mask(d); - raw_spin_unlock(&irq_controller_lock); } static void gic_unmask_irq(struct irq_data *d) { u32 mask = 1 << (gic_irq(d) % 32); - raw_spin_lock(&irq_controller_lock); - if (gic_arch_extn.irq_unmask) - gic_arch_extn.irq_unmask(d); writel_relaxed(mask, gic_dist_base(d) + GIC_DIST_ENABLE_SET + (gic_irq(d) / 32) * 4); - raw_spin_unlock(&irq_controller_lock); } static void gic_eoi_irq(struct irq_data *d) { - if (gic_arch_extn.irq_eoi) { - raw_spin_lock(&irq_controller_lock); - gic_arch_extn.irq_eoi(d); - raw_spin_unlock(&irq_controller_lock); - } - writel_relaxed(gic_irq(d), gic_cpu_base(d) + GIC_CPU_EOI); } @@ -196,23 +169,13 @@ static int gic_set_type(struct irq_data *d, unsigned int type) if (type != IRQ_TYPE_LEVEL_HIGH && type != IRQ_TYPE_EDGE_RISING) return -EINVAL; - raw_spin_lock(&irq_controller_lock); - - if (gic_arch_extn.irq_set_type) - gic_arch_extn.irq_set_type(d, type); - gic_configure_irq(gicirq, type, base, NULL); - raw_spin_unlock(&irq_controller_lock); - return 0; } static int gic_retrigger(struct irq_data *d) { - if (gic_arch_extn.irq_retrigger) - return gic_arch_extn.irq_retrigger(d); - /* the genirq layer expects 0 if we can't retrigger in hardware */ return 0; } @@ -244,21 +207,6 @@ static int gic_set_affinity(struct irq_data *d, const struct cpumask *mask_val, } #endif -#ifdef CONFIG_PM -static int gic_set_wake(struct irq_data *d, unsigned int on) -{ - int ret = -ENXIO; - - if (gic_arch_extn.irq_set_wake) - ret = gic_arch_extn.irq_set_wake(d, on); - - return ret; -} - -#else -#define gic_set_wake NULL -#endif - static void __exception_irq_entry gic_handle_irq(struct pt_regs *regs) { u32 irqstat, irqnr; @@ -321,7 +269,6 @@ static struct irq_chip gic_chip = { #ifdef CONFIG_SMP .irq_set_affinity = gic_set_affinity, #endif - .irq_set_wake = gic_set_wake, }; void __init gic_cascade_irq(unsigned int gic_nr, unsigned int irq) @@ -985,7 +932,6 @@ void __init gic_init_bases(unsigned int gic_nr, int irq_start, set_handle_irq(gic_handle_irq); } - gic_chip.flags |= gic_arch_extn.flags; gic_dist_init(gic); gic_cpu_init(gic); gic_pm_init(gic); diff --git a/include/linux/irqchip/arm-gic.h b/include/linux/irqchip/arm-gic.h index 36ec4ae..9de976b 100644 --- a/include/linux/irqchip/arm-gic.h +++ b/include/linux/irqchip/arm-gic.h @@ -95,8 +95,6 @@ struct device_node; -extern struct irq_chip gic_arch_extn; - void gic_set_irqchip_flags(unsigned long flags); void gic_init_bases(unsigned int, int, void __iomem *, void __iomem *, u32 offset, struct device_node *);