Since commit 55567976629e ("genirq/irqdomain: Allow partial trimming of
irq_data hierarchy") the irq_data chain is valided.
The irq_domain_trim_hierarchy() function doesn't consider the irq + ipi
domain hierarchy as valid, since the ipi domain has the irq domain set
as parent, but the parent domain has no chip set. Hence the boot ends in
a kernel panic.
Set the chip for the parent domain as it is done in the mips gic irq
driver, to have a valid irq_data chain.
Fixes: 3838a547fda2 ("irqchip: mips-cpu: Introduce IPI IRQ domain support")
Cc: <[email protected]> # v5.10+
Signed-off-by: Mathias Kresin <[email protected]>
---
drivers/irqchip/irq-mips-cpu.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/irqchip/irq-mips-cpu.c b/drivers/irqchip/irq-mips-cpu.c
index 95d4fd8f7a96..0bbb0b2d0dd5 100644
--- a/drivers/irqchip/irq-mips-cpu.c
+++ b/drivers/irqchip/irq-mips-cpu.c
@@ -197,6 +197,13 @@ static int mips_cpu_ipi_alloc(struct irq_domain *domain, unsigned int virq,
if (ret)
return ret;
+ ret = irq_domain_set_hwirq_and_chip(domain->parent, virq + i, hwirq,
+ &mips_mt_cpu_irq_controller,
+ NULL);
+
+ if (ret)
+ return ret;
+
ret = irq_set_irq_type(virq + i, IRQ_TYPE_LEVEL_HIGH);
if (ret)
return ret;
--
2.25.1
On Thu, 7 Jan 2021 22:36:03 +0100, Mathias Kresin wrote:
> Since commit 55567976629e ("genirq/irqdomain: Allow partial trimming of
> irq_data hierarchy") the irq_data chain is valided.
>
> The irq_domain_trim_hierarchy() function doesn't consider the irq + ipi
> domain hierarchy as valid, since the ipi domain has the irq domain set
> as parent, but the parent domain has no chip set. Hence the boot ends in
> a kernel panic.
>
> [...]
Applied to irq/irqchip-next, thanks!
[1/1] irqchip: mips-cpu: set IPI domain parent chip
commit: 599b3063adf4bf041a87a69244ee36aded0d878f
Cheers,
M.
--
Without deviation from the norm, progress is not possible.
The following commit has been merged into the irq/irqchip-next branch of irqchip:
Commit-ID: 599b3063adf4bf041a87a69244ee36aded0d878f
Gitweb: https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms/599b3063adf4bf041a87a69244ee36aded0d878f
Author: Mathias Kresin <[email protected]>
AuthorDate: Thu, 07 Jan 2021 22:36:03 +01:00
Committer: Marc Zyngier <[email protected]>
CommitterDate: Sun, 10 Jan 2021 10:20:24
irqchip/mips-cpu: Set IPI domain parent chip
Since commit 55567976629e ("genirq/irqdomain: Allow partial trimming of
irq_data hierarchy") the irq_data chain is valided.
The irq_domain_trim_hierarchy() function doesn't consider the irq + ipi
domain hierarchy as valid, since the ipi domain has the irq domain set
as parent, but the parent domain has no chip set. Hence the boot ends in
a kernel panic.
Set the chip for the parent domain as it is done in the mips gic irq
driver, to have a valid irq_data chain.
Fixes: 3838a547fda2 ("irqchip: mips-cpu: Introduce IPI IRQ domain support")
Cc: <[email protected]> # v5.10+
Signed-off-by: Mathias Kresin <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
---
drivers/irqchip/irq-mips-cpu.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/irqchip/irq-mips-cpu.c b/drivers/irqchip/irq-mips-cpu.c
index 95d4fd8..0bbb0b2 100644
--- a/drivers/irqchip/irq-mips-cpu.c
+++ b/drivers/irqchip/irq-mips-cpu.c
@@ -197,6 +197,13 @@ static int mips_cpu_ipi_alloc(struct irq_domain *domain, unsigned int virq,
if (ret)
return ret;
+ ret = irq_domain_set_hwirq_and_chip(domain->parent, virq + i, hwirq,
+ &mips_mt_cpu_irq_controller,
+ NULL);
+
+ if (ret)
+ return ret;
+
ret = irq_set_irq_type(virq + i, IRQ_TYPE_LEVEL_HIGH);
if (ret)
return ret;