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| author |   Max Filippov <jcmvbkbc@gmail.com> | 2022-04-26 09:01:18 -0700 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2022-05-01 19:55:08 -0700 |
| commit | a255ee29252066d621df5d6b420bf534c6ba5bc0 (patch) | |
| tree | 93ea0982efc2581ea6dcb848d7822e665bd2eb0f | |
| parent | xtensa: enable ARCH_HAS_DEBUG_VM_PGTABLE (diff) | |
| download | wireguard-linux-a255ee29252066d621df5d6b420bf534c6ba5bc0.tar.xz wireguard-linux-a255ee29252066d621df5d6b420bf534c6ba5bc0.zip | |
irqchip: irq-xtensa-mx: fix initial IRQ affinity
When irq-xtensa-mx chip is used in non-SMP configuration its
irq_set_affinity callback is not called leaving IRQ affinity set empty.
As a result IRQ delivery does not work in that configuration.
Initialize IRQ affinity of the xtensa MX interrupt distributor to CPU 0
for all external IRQ lines.
Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| -rw-r--r-- | drivers/irqchip/irq-xtensa-mx.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/irqchip/irq-xtensa-mx.c b/drivers/irqchip/irq-xtensa-mx.c index 27933338f7b3..8c581c985aa7 100644 --- a/drivers/irqchip/irq-xtensa-mx.c +++ b/drivers/irqchip/irq-xtensa-mx.c @@ -151,14 +151,25 @@ static struct irq_chip xtensa_mx_irq_chip = { .irq_set_affinity = xtensa_mx_irq_set_affinity, }; +static void __init xtensa_mx_init_common(struct irq_domain *root_domain) +{ + unsigned int i; + + irq_set_default_host(root_domain); + secondary_init_irq(); + + /* Initialize default IRQ routing to CPU 0 */ + for (i = 0; i < XCHAL_NUM_EXTINTERRUPTS; ++i) + set_er(1, MIROUT(i)); +} + int __init xtensa_mx_init_legacy(struct device_node *interrupt_parent) { struct irq_domain *root_domain = irq_domain_add_legacy(NULL, NR_IRQS - 1, 1, 0, &xtensa_mx_irq_domain_ops, &xtensa_mx_irq_chip); - irq_set_default_host(root_domain); - secondary_init_irq(); + xtensa_mx_init_common(root_domain); return 0; } @@ -168,8 +179,7 @@ static int __init xtensa_mx_init(struct device_node *np, struct irq_domain *root_domain = irq_domain_add_linear(np, NR_IRQS, &xtensa_mx_irq_domain_ops, &xtensa_mx_irq_chip); - irq_set_default_host(root_domain); - secondary_init_irq(); + xtensa_mx_init_common(root_domain); return 0; } IRQCHIP_DECLARE(xtensa_mx_irq_chip, "cdns,xtensa-mx", xtensa_mx_init); |