The following commit has been merged into the irq/msi branch of tip: Commit-ID: c9b4f313f6b83ac80e9d51845d092c32513efdb4 Gitweb: https://git.kernel.org/tip/c9b4f313f6b83ac80e9d51845d092c32513efdb4 Author: Marc Zyngier <maz@xxxxxxxxxx> AuthorDate: Thu, 18 Jul 2024 08:58:04 +01:00 Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CommitterDate: Thu, 18 Jul 2024 20:34:46 +02:00 irqchip/gic-v3-its: Correctly fish out the DID for platform MSI Similarly to PCI where msi-map/msi-mask are used to compute the full RID (aka DID in ITS speak), use the msi-parent as the discovery mechanism, since there is no way a device can generally express its ID. However, since switching to a per-device MSI domain model, the domain passed to its_pmsi_prepare() is the wrong one, and points to the device's instead of the ITS'. Bad. Use the parent domain instead, which is the ITS domain. Fixes: 80b63cc1cc146 ("irqchip/gic-v3-its: Switch platform MSI to MSI parent") Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20240718075804.2245733-1-maz@xxxxxxxxxx --- drivers/irqchip/irq-gic-v3-its-msi-parent.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/irqchip/irq-gic-v3-its-msi-parent.c b/drivers/irqchip/irq-gic-v3-its-msi-parent.c index 2f3fc59..e150365 100644 --- a/drivers/irqchip/irq-gic-v3-its-msi-parent.c +++ b/drivers/irqchip/irq-gic-v3-its-msi-parent.c @@ -134,7 +134,7 @@ static int its_pmsi_prepare(struct irq_domain *domain, struct device *dev, int ret; if (dev->of_node) - ret = of_pmsi_get_dev_id(domain, dev, &dev_id); + ret = of_pmsi_get_dev_id(domain->parent, dev, &dev_id); else ret = iort_pmsi_get_dev_id(dev, &dev_id); if (ret)