2024-05-22 18:08:30

by Konrad Dybcio

Subject: [PATCH v2] spmi: pmic-arb: Pass the correct of_node to irq_domain_add_tree

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 <[email protected]>
---
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 <[email protected]>

2024-05-22 19:37:10

by Abel Vesa

Subject: Re: [PATCH v2] spmi: pmic-arb: Pass the correct of_node to irq_domain_add_tree

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 <[email protected]>

You forgot the fixes tag here as well.

LGTM otherwise.

Reviewed-by: Abel Vesa <[email protected]>

> ---
> 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 <[email protected]>
>