diff options
| author | Pali Rohár <pali@kernel.org> | 2024-06-21 11:38:28 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-06-23 17:23:08 +0200 |
| commit | 3cef738208e5c3cb7084e208caf9bbf684f24feb (patch) | |
| tree | 043ca1da9faa6d05b1c1455a770c2adc958b990a /drivers/irqchip/irq-armada-370-xp.c | |
| parent | 50c43447f71c6d0eb9e320c4cc69822d396e52bc (diff) | |
irqchip/armada-370-xp: Do not allow mapping IRQ 0 and 1
IRQs 0 (IPI) and 1 (MSI) are handled internally by this driver,
generic_handle_domain_irq() is never called for these IRQs.
Disallow mapping these IRQs.
[ Marek: changed commit message ]
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Diffstat (limited to 'drivers/irqchip/irq-armada-370-xp.c')
| -rw-r--r-- | drivers/irqchip/irq-armada-370-xp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c index 676df716a3aa..526077df1c84 100644 --- a/drivers/irqchip/irq-armada-370-xp.c +++ b/drivers/irqchip/irq-armada-370-xp.c @@ -560,6 +560,10 @@ static struct irq_chip armada_370_xp_irq_chip = { static int armada_370_xp_mpic_irq_map(struct irq_domain *h, unsigned int virq, irq_hw_number_t hw) { + /* IRQs 0 and 1 cannot be mapped, they are handled internally */ + if (hw <= 1) + return -EINVAL; + armada_370_xp_irq_mask(irq_get_irq_data(virq)); if (!is_percpu_irq(hw)) writel(hw, per_cpu_int_base + |