Currently, irqchips for all of the subnodes (which represent a given
bus master) point to the parent wrapper node. This is no bueno, as
no interrupts arrive, ever (because nothing references that node).

Fix that by passing a reference to the respective master's of_node.

Worth noting, this is a NOP for devices with only a single master
described.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
Changes in v2:
- Un-delete the missing ampersand
- Link to v1: https://lore.kernel.org/r/20240522-topic-spmi_multi_master_irqfix-v1-1-f7098b9c8804@linaro.org
---
 drivers/spmi/spmi-pmic-arb.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index 791cdc160c51..e6a4bf3abb1f 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -1737,8 +1737,7 @@ static int spmi_pmic_arb_bus_init(struct platform_device *pdev,
 
 	dev_dbg(&pdev->dev, "adding irq domain for bus %d\n", bus_index);
 
-	bus->domain = irq_domain_add_tree(dev->of_node,
-					  &pmic_arb_irq_domain_ops, bus);
+	bus->domain = irq_domain_add_tree(node, &pmic_arb_irq_domain_ops, bus);
 	if (!bus->domain) {
 		dev_err(&pdev->dev, "unable to create irq_domain\n");
 		return -ENOMEM;

---
base-commit: 8314289a8d50a4e05d8ece1ae0445a3b57bb4d3b
change-id: 20240522-topic-spmi_multi_master_irqfix-f63ebf47b02c

Best regards,
-- 
Konrad Dybcio <konrad.dybcio@linaro.org>

Quoting Konrad Dybcio (2024-05-22 11:08:17)
> Currently, irqchips for all of the subnodes (which represent a given
> bus master) point to the parent wrapper node. This is no bueno, as
> no interrupts arrive, ever (because nothing references that node).
> 
> Fix that by passing a reference to the respective master's of_node.
> 
> Worth noting, this is a NOP for devices with only a single master
> described.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
> ---

Applied to spmi-next

On 24-05-22 20:08:17, Konrad Dybcio wrote:
> Currently, irqchips for all of the subnodes (which represent a given
> bus master) point to the parent wrapper node. This is no bueno, as
> no interrupts arrive, ever (because nothing references that node).
> 
> Fix that by passing a reference to the respective master's of_node.
> 
> Worth noting, this is a NOP for devices with only a single master
> described.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>

You forgot the fixes tag here as well.

LGTM otherwise.

Reviewed-by: Abel Vesa <abel.vesa@linaro.org>

> ---
> Changes in v2:
> - Un-delete the missing ampersand
> - Link to v1: https://lore.kernel.org/r/20240522-topic-spmi_multi_master_irqfix-v1-1-f7098b9c8804@linaro.org
> ---
>  drivers/spmi/spmi-pmic-arb.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
> index 791cdc160c51..e6a4bf3abb1f 100644
> --- a/drivers/spmi/spmi-pmic-arb.c
> +++ b/drivers/spmi/spmi-pmic-arb.c
> @@ -1737,8 +1737,7 @@ static int spmi_pmic_arb_bus_init(struct platform_device *pdev,
>  
>  	dev_dbg(&pdev->dev, "adding irq domain for bus %d\n", bus_index);
>  
> -	bus->domain = irq_domain_add_tree(dev->of_node,
> -					  &pmic_arb_irq_domain_ops, bus);
> +	bus->domain = irq_domain_add_tree(node, &pmic_arb_irq_domain_ops, bus);
>  	if (!bus->domain) {
>  		dev_err(&pdev->dev, "unable to create irq_domain\n");
>  		return -ENOMEM;
> 
> ---
> base-commit: 8314289a8d50a4e05d8ece1ae0445a3b57bb4d3b
> change-id: 20240522-topic-spmi_multi_master_irqfix-f63ebf47b02c
> 
> Best regards,
> -- 
> Konrad Dybcio <konrad.dybcio@linaro.org>
>

On Wed, May 22, 2024 at 10:36:59PM +0300, Abel Vesa wrote:
> On 24-05-22 20:08:17, Konrad Dybcio wrote:
> > Currently, irqchips for all of the subnodes (which represent a given
> > bus master) point to the parent wrapper node. This is no bueno, as
> > no interrupts arrive, ever (because nothing references that node).
> > 
> > Fix that by passing a reference to the respective master's of_node.
> > 
> > Worth noting, this is a NOP for devices with only a single master
> > described.
> > 
> > Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
> 
> You forgot the fixes tag here as well.

Fixes: 02922ccbb330 ("spmi: pmic-arb: Register controller for bus instead of arbiter")
Cc: stable@vger.kernel.org # 6.10
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

Let's hope we can get it in 6.11 at least (6.10 would still be better)

> 
> LGTM otherwise.
> 
> Reviewed-by: Abel Vesa <abel.vesa@linaro.org>
> 
> > ---
> > Changes in v2:
> > - Un-delete the missing ampersand
> > - Link to v1: https://lore.kernel.org/r/20240522-topic-spmi_multi_master_irqfix-v1-1-f7098b9c8804@linaro.org
> > ---
> >  drivers/spmi/spmi-pmic-arb.c | 3 +--
> >  1 file changed, 1 insertion(+), 2 deletions(-)
> > 
> > diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
> > index 791cdc160c51..e6a4bf3abb1f 100644
> > --- a/drivers/spmi/spmi-pmic-arb.c
> > +++ b/drivers/spmi/spmi-pmic-arb.c
> > @@ -1737,8 +1737,7 @@ static int spmi_pmic_arb_bus_init(struct platform_device *pdev,
> >  
> >  	dev_dbg(&pdev->dev, "adding irq domain for bus %d\n", bus_index);
> >  
> > -	bus->domain = irq_domain_add_tree(dev->of_node,
> > -					  &pmic_arb_irq_domain_ops, bus);
> > +	bus->domain = irq_domain_add_tree(node, &pmic_arb_irq_domain_ops, bus);
> >  	if (!bus->domain) {
> >  		dev_err(&pdev->dev, "unable to create irq_domain\n");
> >  		return -ENOMEM;
> > 
> > ---
> > base-commit: 8314289a8d50a4e05d8ece1ae0445a3b57bb4d3b
> > change-id: 20240522-topic-spmi_multi_master_irqfix-f63ebf47b02c
> > 
> > Best regards,
> > -- 
> > Konrad Dybcio <konrad.dybcio@linaro.org>
> > 

-- 
With best wishes
Dmitry