From patchwork Thu Jun 29 21:33:35 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 782467 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3wzCrx6wF8z9s72 for ; Fri, 30 Jun 2017 07:45:53 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753782AbdF2Vpi (ORCPT ); Thu, 29 Jun 2017 17:45:38 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:59332 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751896AbdF2VpX (ORCPT ); Thu, 29 Jun 2017 17:45:23 -0400 Received: from localhost ([127.0.0.1] helo=[127.0.1.1]) by Galois.linutronix.de with esmtp (Exim 4.80) (envelope-from ) id 1dQhEH-0001Ka-K8; Thu, 29 Jun 2017 23:44:01 +0200 Message-Id: <20170629214343.882576048@linutronix.de> User-Agent: quilt/0.63-1 Date: Thu, 29 Jun 2017 23:33:35 +0200 From: Thomas Gleixner To: LKML Cc: Marc Zyngier , Linus Walleij , Brian Norris , Heiko Stuebner , linux-rockchip@lists.infradead.org, Julia Cartwright , linux-gpio@vger.kernel.org, John Keeping , Doug Anderson , Tomasz Figa , Krzysztof Kozlowski , Sylwester Nawrocki , Kukjin Kim , linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org Subject: [patch 1/5] pinctrl: samsung: Remove bogus irq_[un]mask from resource management References: <20170629213334.375848050@linutronix.de> MIME-Version: 1.0 Content-Disposition: inline; filename=pinctrl--samsung--Remove-bogus-irqmask-unmask.patch Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org The irq chip callbacks irq_request/release_resources() have absolutely no business with masking and unmasking the irq. The core code unmasks the interrupt after complete setup and masks it before invoking irq_release_resources(). The unmask is actually harmful as it happens before the interrupt is completely initialized in __setup_irq(). Remove it. Fixes: f6a8249f9e55 ("pinctrl: exynos: Lock GPIOs as interrupts when used as EINTs") Signed-off-by: Thomas Gleixner Cc: Tomasz Figa Cc: Krzysztof Kozlowski Cc: Sylwester Nawrocki Cc: Linus Walleij Cc: Kukjin Kim Cc: linux-arm-kernel@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Cc: linux-gpio@vger.kernel.org Acked-by: Tomasz Figa Reviewed-by: Linus Walleij --- drivers/pinctrl/samsung/pinctrl-exynos.c | 4 ---- 1 file changed, 4 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html --- a/drivers/pinctrl/samsung/pinctrl-exynos.c +++ b/drivers/pinctrl/samsung/pinctrl-exynos.c @@ -205,8 +205,6 @@ static int exynos_irq_request_resources( spin_unlock_irqrestore(&bank->slock, flags); - exynos_irq_unmask(irqd); - return 0; } @@ -226,8 +224,6 @@ static void exynos_irq_release_resources shift = irqd->hwirq * bank_type->fld_width[PINCFG_TYPE_FUNC]; mask = (1 << bank_type->fld_width[PINCFG_TYPE_FUNC]) - 1; - exynos_irq_mask(irqd); - spin_lock_irqsave(&bank->slock, flags); con = readl(bank->eint_base + reg_con);