From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Gleixner Subject: [patch 1/5] pinctrl: samsung: Remove bogus irq_[un]mask from resource management Date: Thu, 29 Jun 2017 23:33:35 +0200 Message-ID: <20170629214343.882576048@linutronix.de> References: <20170629213334.375848050@linutronix.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Return-path: Content-Disposition: inline; filename=pinctrl--samsung--Remove-bogus-irqmask-unmask.patch Sender: linux-kernel-owner@vger.kernel.org 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 List-Id: 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 --- drivers/pinctrl/samsung/pinctrl-exynos.c | 4 ---- 1 file changed, 4 deletions(-) --- 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);