diff options
| author | Pali Rohár <pali@kernel.org> | 2024-06-21 11:38:28 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-09-12 11:06:45 +0200 |
| commit | ec08e3008241ecd917acf1465129d3d2c795dae9 (patch) | |
| tree | 925e082e71d9cad2905af825ecade7df8174498a /drivers/irqchip | |
| parent | 500e4bf67387c81165f9c12bb0fec950ecb9d6ce (diff) | |
irqchip/armada-370-xp: Do not allow mapping IRQ 0 and 1
[ Upstream commit 3cef738208e5c3cb7084e208caf9bbf684f24feb ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/irqchip')
| -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 c76fb70c70bb..e865a43428b8 100644 --- a/drivers/irqchip/irq-armada-370-xp.c +++ b/drivers/irqchip/irq-armada-370-xp.c @@ -546,6 +546,10 @@ 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 + |