[PATCH] ipmi: si: Handle errors from optional IRQ lookup

[PATCH] ipmi: si: Handle errors from optional IRQ lookup

[phucduc.bui]

From: bui duc phuc <phucduc.bui@gmail.com>

platform_get_irq_optional() returns a positive IRQ number on success or
a negative error code on failure. For an optional IRQ, -ENXIO indicates
that no optional IRQ is available. Other errors, such as -EPROBE_DEFER
and -EINVAL, should be propagated so that the caller can handle them
appropriately.

Propagate negative errors other than -ENXIO.

Fixes: 39851b7e580a ("ipmi: si: Use platform_get_irq_optional() to retrieve interrupt")
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 drivers/char/ipmi/ipmi_si_platform.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/char/ipmi/ipmi_si_platform.c b/drivers/char/ipmi/ipmi_si_platform.c
index bdc481ce1302..04b3e205470f 100644
--- a/drivers/char/ipmi/ipmi_si_platform.c
+++ b/drivers/char/ipmi/ipmi_si_platform.c
@@ -198,6 +198,8 @@ static int platform_ipmi_probe(struct platform_device *pdev)
 		io.slave_addr = slave_addr;
 
 	io.irq = platform_get_irq_optional(pdev, 0);
+	if (io.irq < 0 && io.irq != -ENXIO)
+		return io.irq;
 	if (io.irq > 0)
 		io.irq_setup = ipmi_std_irq_setup;
 	else
-- 
2.43.0

Re: [PATCH] ipmi: si: Handle errors from optional IRQ lookup

[Corey Minyard]

On Mon, Aug 17, 2026 at 05:51:50PM +0700, phucduc.bui@gmail.com wrote:
> From: bui duc phuc <phucduc.bui@gmail.com>
> 
> platform_get_irq_optional() returns a positive IRQ number on success or
> a negative error code on failure. For an optional IRQ, -ENXIO indicates
> that no optional IRQ is available. Other errors, such as -EPROBE_DEFER
> and -EINVAL, should be propagated so that the caller can handle them
> appropriately.
> 
> Propagate negative errors other than -ENXIO.

The driver works without interrupts, and there may be cases where
-EINVAL or -EPROBE_DEFER gets returned due to invalid configuration.
This will break those systems.

So no.

-corey

> 
> Fixes: 39851b7e580a ("ipmi: si: Use platform_get_irq_optional() to retrieve interrupt")
> Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
> ---
>  drivers/char/ipmi/ipmi_si_platform.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/char/ipmi/ipmi_si_platform.c b/drivers/char/ipmi/ipmi_si_platform.c
> index bdc481ce1302..04b3e205470f 100644
> --- a/drivers/char/ipmi/ipmi_si_platform.c
> +++ b/drivers/char/ipmi/ipmi_si_platform.c
> @@ -198,6 +198,8 @@ static int platform_ipmi_probe(struct platform_device *pdev)
>  		io.slave_addr = slave_addr;
>  
>  	io.irq = platform_get_irq_optional(pdev, 0);
> +	if (io.irq < 0 && io.irq != -ENXIO)
> +		return io.irq;
>  	if (io.irq > 0)
>  		io.irq_setup = ipmi_std_irq_setup;
>  	else
> -- 
> 2.43.0
>