2019-07-25 06:39:30

by Vasyl Gomonovych

[permalink] [raw]
Subject: [PATCH] extcon: max77693: Add extra IRQF_ONESHOT

Do not fire irq again until thread done
This issue was found by code inspection
Coccicheck irqf_oneshot.cocci

Signed-off-by: Vasyl Gomonovych <[email protected]>
---
drivers/extcon/extcon-max77693.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c
index 32fc5a66ffa9..68e42cd87e98 100644
--- a/drivers/extcon/extcon-max77693.c
+++ b/drivers/extcon/extcon-max77693.c
@@ -1142,7 +1142,7 @@ static int max77693_muic_probe(struct platform_device *pdev)

ret = devm_request_threaded_irq(&pdev->dev, virq, NULL,
max77693_muic_irq_handler,
- IRQF_NO_SUSPEND,
+ IRQF_NO_SUSPEND | IRQF_ONESHOT,
muic_irq->name, info);
if (ret) {
dev_err(&pdev->dev,
--
2.17.1



2019-07-25 16:18:04

by Krzysztof Kozlowski

[permalink] [raw]
Subject: Re: [PATCH] extcon: max77693: Add extra IRQF_ONESHOT

On Thu, 25 Jul 2019 at 08:37, Vasyl Gomonovych <[email protected]> wrote:
>
> Do not fire irq again until thread done
> This issue was found by code inspection
> Coccicheck irqf_oneshot.cocci

Rationale does not look convincing. Do you fix real problem or just
automatic fix from coccinelle? If the latter, then it looks wrong.
This is virtual IRQ so no need for oneshot. The hardware IRQ has
oneshot set. Otherwise please provide slightly more specific rationale
for this commit.

Best regards,
Krzysztof


>
> Signed-off-by: Vasyl Gomonovych <[email protected]>
> ---
> drivers/extcon/extcon-max77693.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c
> index 32fc5a66ffa9..68e42cd87e98 100644
> --- a/drivers/extcon/extcon-max77693.c
> +++ b/drivers/extcon/extcon-max77693.c
> @@ -1142,7 +1142,7 @@ static int max77693_muic_probe(struct platform_device *pdev)
>
> ret = devm_request_threaded_irq(&pdev->dev, virq, NULL,
> max77693_muic_irq_handler,
> - IRQF_NO_SUSPEND,
> + IRQF_NO_SUSPEND | IRQF_ONESHOT,
> muic_irq->name, info);
> if (ret) {
> dev_err(&pdev->dev,
> --
> 2.17.1
>

2019-07-26 08:40:38

by Vasyl Gomonovych

[permalink] [raw]
Subject: Re: [PATCH] extcon: max77693: Add extra IRQF_ONESHOT

Sorry, my bad, I have missed disabling place, and positive feedback
for max in other thread and push me to send it.

On Thu, Jul 25, 2019 at 9:23 AM Krzysztof Kozlowski <[email protected]> wrote:
>
> On Thu, 25 Jul 2019 at 08:37, Vasyl Gomonovych <[email protected]> wrote:
> >
> > Do not fire irq again until thread done
> > This issue was found by code inspection
> > Coccicheck irqf_oneshot.cocci
>
> Rationale does not look convincing. Do you fix real problem or just
> automatic fix from coccinelle? If the latter, then it looks wrong.
> This is virtual IRQ so no need for oneshot. The hardware IRQ has
> oneshot set. Otherwise please provide slightly more specific rationale
> for this commit.
>
> Best regards,
> Krzysztof
>
>
> >
> > Signed-off-by: Vasyl Gomonovych <[email protected]>
> > ---
> > drivers/extcon/extcon-max77693.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c
> > index 32fc5a66ffa9..68e42cd87e98 100644
> > --- a/drivers/extcon/extcon-max77693.c
> > +++ b/drivers/extcon/extcon-max77693.c
> > @@ -1142,7 +1142,7 @@ static int max77693_muic_probe(struct platform_device *pdev)
> >
> > ret = devm_request_threaded_irq(&pdev->dev, virq, NULL,
> > max77693_muic_irq_handler,
> > - IRQF_NO_SUSPEND,
> > + IRQF_NO_SUSPEND | IRQF_ONESHOT,
> > muic_irq->name, info);
> > if (ret) {
> > dev_err(&pdev->dev,
> > --
> > 2.17.1
> >



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