From: Oleksandr Natalenko <oleksandr@natalenko.name>
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,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Subject: Re: [PATCH 1/7] genirq: Provide generic_handle_irq_safe().
Date: Thu, 27 Jan 2022 15:40:39 +0100 [thread overview]
Message-ID: <5753562.DvuYhMxLoT@natalenko.name> (raw)
In-Reply-To: <20220127113303.3012207-2-bigeasy@linutronix.de>
Hello.
On čtvrtek 27. ledna 2022 12:32:57 CET Sebastian Andrzej Siewior wrote:
> Provide generic_handle_irq_safe() which can be used can used from any
> context.
>
> Suggested-by: Thomas Gleixner <tglx@linutronix.de>
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> ---
> include/linux/irqdesc.h | 1 +
> kernel/irq/irqdesc.c | 21 +++++++++++++++++++++
> 2 files changed, 22 insertions(+)
>
> diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
> index 93d270ca0c567..a77584593f7d1 100644
> --- a/include/linux/irqdesc.h
> +++ b/include/linux/irqdesc.h
> @@ -160,6 +160,7 @@ static inline void generic_handle_irq_desc(struct irq_desc *desc)
>
> int handle_irq_desc(struct irq_desc *desc);
> int generic_handle_irq(unsigned int irq);
> +int generic_handle_irq_safe(unsigned int irq);
>
> #ifdef CONFIG_IRQ_DOMAIN
> /*
> diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
> index 2267e6527db3c..97223df2f460e 100644
> --- a/kernel/irq/irqdesc.c
> +++ b/kernel/irq/irqdesc.c
> @@ -662,6 +662,27 @@ int generic_handle_irq(unsigned int irq)
> }
> EXPORT_SYMBOL_GPL(generic_handle_irq);
>
> +/**
> + * generic_handle_irq_safe - Invoke the handler for a particular irq
> + * @irq: The irq number to handle
> + *
> + * Returns: 0 on success, or -EINVAL if conversion has failed
> + *
> + * This function must be called either from an IRQ context with irq regs
> + * initialized or with care from any context.
> + */
> +int generic_handle_irq_safe(unsigned int irq)
> +{
> + unsigned long flags;
> + int ret;
> +
> + local_irq_save(flags);
> + ret = handle_irq_desc(irq_to_desc(irq));
> + local_irq_restore(flags);
> + return ret;
> +}
> +EXPORT_SYMBOL_GPL(generic_handle_irq_safe);
> +
> #ifdef CONFIG_IRQ_DOMAIN
> /**
> * generic_handle_domain_irq - Invoke the handler for a HW irq belonging
>
Reviewed-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Thank you.
--
Oleksandr Natalenko (post-factum)
next prev parent reply other threads:[~2022-01-27 14:40 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-27 11:32 [PATCH 0/7] Provide and use generic_handle_irq_safe() where appropriate Sebastian Andrzej Siewior
2022-01-27 11:32 ` [PATCH 1/7] genirq: Provide generic_handle_irq_safe() Sebastian Andrzej Siewior
2022-01-27 11:48 ` Hans de Goede
2022-01-27 14:40 ` Oleksandr Natalenko [this message]
2022-01-27 17:03 ` Wolfram Sang
2022-01-31 10:47 ` Sebastian Andrzej Siewior
2022-01-28 10:18 ` Sergei Shtylyov
2022-01-31 10:51 ` Sebastian Andrzej Siewior
2022-01-27 11:32 ` [PATCH 2/7] i2c: core: Use generic_handle_irq_safe() in i2c_handle_smbus_host_notify() Sebastian Andrzej Siewior
2022-01-27 14:41 ` Oleksandr Natalenko
2022-01-31 11:09 ` Sebastian Andrzej Siewior
2022-01-27 17:11 ` Wolfram Sang
2022-01-31 11:07 ` Sebastian Andrzej Siewior
2022-01-27 11:32 ` [PATCH 3/7] i2c: cht-wc: Use generic_handle_irq_safe() Sebastian Andrzej Siewior
2022-01-27 11:48 ` Hans de Goede
2022-01-27 17:16 ` Wolfram Sang
2022-01-31 11:10 ` Sebastian Andrzej Siewior
2022-01-27 11:33 ` [PATCH 4/7] mfd: hi6421-spmi-pmic: " Sebastian Andrzej Siewior
2022-01-28 10:23 ` Sergei Shtylyov
2022-01-28 13:33 ` Lee Jones
2022-01-28 15:28 ` Sergei Shtylyov
2022-01-28 16:44 ` Sergei Shtylyov
2022-01-28 16:50 ` Lee Jones
2022-01-28 19:37 ` Sergei Shtylyov
2022-01-31 11:16 ` Sebastian Andrzej Siewior
2022-01-27 11:33 ` [PATCH 5/7] mfd: ezx-pcap: " Sebastian Andrzej Siewior
2022-01-27 11:33 ` [PATCH 6/7] net: usb: lan78xx: " Sebastian Andrzej Siewior
2022-01-27 11:33 ` [PATCH 7/7] staging: greybus: gpio: " Sebastian Andrzej Siewior
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