Re: [PATCH 3/6] irqchip/gic-v3-its: Add fsl_mc device plumbing to the msi-parent handling
From: Thomas Gleixner <tglx@kernel.org>
Date: 2026-02-23 13:02:53
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linux-arm-kernel, lkml
On Mon, Feb 23 2026 at 09:01, Marc Zyngier wrote:
On Sun, 22 Feb 2026 22:57:44 +0000, Thomas Gleixner [off-list ref] wrote:quoted
This rejects as you are building against an unmerged change (I assume it's Lorenzos GIC5 stuff). I can fix it up when applying.That was against vanilla 6.19. I'll rebase on -rc1 to satisfy myself that this is still doing the right thing after the ACPI crap fest, and repost the result.
Ah. The other way round :)
My resolution is simple and it looks about right. Please note the
cosmetic changes I did on the way :)
Thanks,
tglx
------ a/drivers/irqchip/irq-gic-its-msi-parent.c
+++ b/drivers/irqchip/irq-gic-its-msi-parent.c@@ -5,6 +5,7 @@ // Copyright (C) 2022 Intel #include <linux/acpi_iort.h> +#include <linux/fsl/mc.h> #include <linux/of_address.h> #include <linux/pci.h>
@@ -186,10 +187,12 @@ static int its_pmsi_prepare(struct irq_d int nvec, msi_alloc_info_t *info) { struct msi_domain_info *msi_info; + int ret = 0; u32 dev_id; - int ret; - if (dev->of_node) + if (dev_is_fsl_mc(dev)) + dev_id = fsl_mc_get_msi_id(dev); + else if (dev->of_node) ret = of_pmsi_get_msi_info(domain->parent, dev, &dev_id, NULL); else ret = iort_pmsi_get_msi_info(dev, &dev_id, NULL);