[PATCH 02/21] platform/x86: int0002: Remove IRQF_ONESHOT from request_irq()

[PATCH 02/21] platform/x86: int0002: Remove IRQF_ONESHOT from request_irq()

[Sebastian Andrzej Siewior]

Passing IRQF_ONESHOT ensures that the interrupt source is masked until
the secondary (threaded) handler is done. If only a primary handler is
used then the flag makes no sense because the interrupt can not fire
(again) while its handler is running.
The flag also disallows force-threading of the primary handler and the
irq-core will warn about this.

The flag was added to match the flag on the shared handler which uses a
threaded handler and therefore IRQF_ONESHOT. This is no longer needed
because devm_request_irq() now passes IRQF_COND_ONESHOT for this case.

Revert adding IRQF_ONESHOT to irqflags.

Cc: Hans de Goede <hansg@kernel.org>
Cc: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>
Cc: platform-driver-x86@vger.kernel.org
Reported-by: "Borah, Chaitanya Kumar" <chaitanya.kumar.borah@intel.com>
Closes: https://lore.kernel.org/all/555f1c56-0f74-41bf-8bd2-6217e0aab0c6@intel.com
Fixes: 8f812373d1958 ("platform/x86: intel: int0002_vgpio: Pass IRQF_ONESHOT to request_irq()")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
 drivers/platform/x86/intel/int0002_vgpio.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/platform/x86/intel/int0002_vgpio.c b/drivers/platform/x86/intel/int0002_vgpio.c
index 6f5629dc3f8db..562e880256436 100644
--- a/drivers/platform/x86/intel/int0002_vgpio.c
+++ b/drivers/platform/x86/intel/int0002_vgpio.c
@@ -206,8 +206,8 @@ static int int0002_probe(struct platform_device *pdev)
 	 * FIXME: augment this if we managed to pull handling of shared
 	 * IRQs into gpiolib.
 	 */
-	ret = devm_request_irq(dev, irq, int0002_irq,
-			       IRQF_ONESHOT | IRQF_SHARED, "INT0002", chip);
+	ret = devm_request_irq(dev, irq, int0002_irq, IRQF_SHARED, "INT0002",
+			       chip);
 	if (ret) {
 		dev_err(dev, "Error requesting IRQ %d: %d\n", irq, ret);
 		return ret;
-- 
2.51.0

Re: [PATCH 02/21] platform/x86: int0002: Remove IRQF_ONESHOT from request_irq()

[Sebastian Andrzej Siewior]

On 2026-01-23 12:36:48 [+0100], To linux-kernel@vger.kernel.org wrote:
> Passing IRQF_ONESHOT ensures that the interrupt source is masked until
> the secondary (threaded) handler is done. If only a primary handler is
> used then the flag makes no sense because the interrupt can not fire
> (again) while its handler is running.
> The flag also disallows force-threading of the primary handler and the
> irq-core will warn about this.
> 
> The flag was added to match the flag on the shared handler which uses a
> threaded handler and therefore IRQF_ONESHOT. This is no longer needed
> because devm_request_irq() now passes IRQF_COND_ONESHOT for this case.
> 
> Revert adding IRQF_ONESHOT to irqflags.

This one should probably go hand in hand with the previous one. It might
be easier to route both via tip/irq.

Sebastian

Re: [PATCH 02/21] platform/x86: int0002: Remove IRQF_ONESHOT from request_irq()

[Ilpo Järvinen]

[-- Attachment #1: Type: text/plain, Size: 1002 bytes --]

On Fri, 23 Jan 2026, Sebastian Andrzej Siewior wrote:

> On 2026-01-23 12:36:48 [+0100], To linux-kernel@vger.kernel.org wrote:
> > Passing IRQF_ONESHOT ensures that the interrupt source is masked until
> > the secondary (threaded) handler is done. If only a primary handler is
> > used then the flag makes no sense because the interrupt can not fire
> > (again) while its handler is running.
> > The flag also disallows force-threading of the primary handler and the
> > irq-core will warn about this.
> > 
> > The flag was added to match the flag on the shared handler which uses a
> > threaded handler and therefore IRQF_ONESHOT. This is no longer needed
> > because devm_request_irq() now passes IRQF_COND_ONESHOT for this case.
> > 
> > Revert adding IRQF_ONESHOT to irqflags.
> 
> This one should probably go hand in hand with the previous one. It might
> be easier to route both via tip/irq.

For that,

Acked-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

-- 
 i.

Re: [PATCH 02/21] platform/x86: int0002: Remove IRQF_ONESHOT from request_irq()

[Hans de Goede]

Hi,

On 23-Jan-26 12:36, Sebastian Andrzej Siewior wrote:
> Passing IRQF_ONESHOT ensures that the interrupt source is masked until
> the secondary (threaded) handler is done. If only a primary handler is
> used then the flag makes no sense because the interrupt can not fire
> (again) while its handler is running.
> The flag also disallows force-threading of the primary handler and the
> irq-core will warn about this.
> 
> The flag was added to match the flag on the shared handler which uses a
> threaded handler and therefore IRQF_ONESHOT. This is no longer needed
> because devm_request_irq() now passes IRQF_COND_ONESHOT for this case.
> 
> Revert adding IRQF_ONESHOT to irqflags.
> 
> Cc: Hans de Goede <hansg@kernel.org>
> Cc: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>
> Cc: platform-driver-x86@vger.kernel.org
> Reported-by: "Borah, Chaitanya Kumar" <chaitanya.kumar.borah@intel.com>
> Closes: https://lore.kernel.org/all/555f1c56-0f74-41bf-8bd2-6217e0aab0c6@intel.com
> Fixes: 8f812373d1958 ("platform/x86: intel: int0002_vgpio: Pass IRQF_ONESHOT to request_irq()")
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

Thanks, patch looks good to me:

Reviewed-by: Hans de Goede <johannes.goede@oss.qualcomm.com>

Regards,

Hans



> ---
>  drivers/platform/x86/intel/int0002_vgpio.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/platform/x86/intel/int0002_vgpio.c b/drivers/platform/x86/intel/int0002_vgpio.c
> index 6f5629dc3f8db..562e880256436 100644
> --- a/drivers/platform/x86/intel/int0002_vgpio.c
> +++ b/drivers/platform/x86/intel/int0002_vgpio.c
> @@ -206,8 +206,8 @@ static int int0002_probe(struct platform_device *pdev)
>  	 * FIXME: augment this if we managed to pull handling of shared
>  	 * IRQs into gpiolib.
>  	 */
> -	ret = devm_request_irq(dev, irq, int0002_irq,
> -			       IRQF_ONESHOT | IRQF_SHARED, "INT0002", chip);
> +	ret = devm_request_irq(dev, irq, int0002_irq, IRQF_SHARED, "INT0002",
> +			       chip);
>  	if (ret) {
>  		dev_err(dev, "Error requesting IRQ %d: %d\n", irq, ret);
>  		return ret;