[0/7] Provide and use generic_handle_irq_safe() where appropriate.

Message ID	20220127113303.3012207-1-bigeasy@linutronix.de
Headers	show Return-Path: <linux-usb-owner@kernel.org> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> To: greybus-dev@lists.linaro.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, linux-staging@lists.linux.dev, linux-usb@vger.kernel.org, netdev@vger.kernel.org Cc: "David S. Miller" <davem@davemloft.net>, Alex Elder <elder@kernel.org>, Arnd Bergmann <arnd@arndb.de>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Hans de Goede <hdegoede@redhat.com>, Jakub Kicinski <kuba@kernel.org>, Johan Hovold <johan@kernel.org>, Lee Jones <lee.jones@linaro.org>, Rui Miguel Silva <rmfrfs@gmail.com>, Thomas Gleixner <tglx@linutronix.de>, UNGLinuxDriver@microchip.com, Wolfram Sang <wsa@kernel.org>, Woojung Huh <woojung.huh@microchip.com> Subject: [PATCH 0/7] Provide and use generic_handle_irq_safe() where appropriate. Date: Thu, 27 Jan 2022 12:32:56 +0100 Message-Id: <20220127113303.3012207-1-bigeasy@linutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk
Series	Provide and use generic_handle_irq_safe() where appropriate. \| expand [0/7] Provide and use generic_handle_irq_safe() where appropriate. [1/7] genirq: Provide generic_handle_irq_safe(). [2/7] i2c: core: Use generic_handle_irq_safe() in i2c_handle_smbus_host_notify(). [3/7] i2c: cht-wc: Use generic_handle_irq_safe(). [4/7] mfd: hi6421-spmi-pmic: Use generic_handle_irq_safe(). [5/7] mfd: ezx-pcap: Use generic_handle_irq_safe(). [6/7] net: usb: lan78xx: Use generic_handle_irq_safe(). [7/7] staging: greybus: gpio: Use generic_handle_irq_safe().

Message ID

20220127113303.3012207-1-bigeasy@linutronix.de

Headers

From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: greybus-dev@lists.linaro.org, linux-i2c@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-staging@lists.linux.dev,
        linux-usb@vger.kernel.org, netdev@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>,
        Alex Elder <elder@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Hans de Goede <hdegoede@redhat.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Johan Hovold <johan@kernel.org>,
        Lee Jones <lee.jones@linaro.org>,
        Rui Miguel Silva <rmfrfs@gmail.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        UNGLinuxDriver@microchip.com, Wolfram Sang <wsa@kernel.org>,
        Woojung Huh <woojung.huh@microchip.com>
Subject: [PATCH 0/7] Provide and use generic_handle_irq_safe() where
 appropriate.
Date: Thu, 27 Jan 2022 12:32:56 +0100
Message-Id: <20220127113303.3012207-1-bigeasy@linutronix.de>
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable
Precedence: bulk

Series

Provide and use generic_handle_irq_safe() where appropriate. | expand

Message

Sebastian Andrzej Siewior Jan. 27, 2022, 11:32 a.m. UTC

generic_handle_irq() must be used from primary IRQ-handler (chain
handler/ interrupt controller entry). It is low level code and the
function expects that interrupts are disabled at entry point.

This isn't the case for invocations from tasklets, workqueues or the
primary interrupt handler on PREEMPT_RT. Once this gets noticed a
"local_irq_disable|safe()" is added. To avoid further confusion this
series adds generic_handle_irq_safe() which can be used from any context
and adds a few user.

Sebastian