From: Marek Behún Date: Wed, 7 Aug 2024 16:41:02 +0000 (+0200) Subject: irqchip/armada-370-xp: Iterate only valid bits of the per-CPU interrupt cause register X-Git-Tag: v6.12-rc1~195^2~30 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=4042a965a5e62c8d298d642cbf72b14f41687319;p=thirdparty%2Flinux.git irqchip/armada-370-xp: Iterate only valid bits of the per-CPU interrupt cause register Use MPIC_PER_CPU_IRQS_NR (29) bound instead of BITS_PER_LONG (32) when iterating the bits of the per-CPU interrupt cause register, since there are only 29 per-CPU interrupts. The top 3 bits are always zero anyway. Signed-off-by: Marek Behún Signed-off-by: Thomas Gleixner --- diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c index 83afc3a278125..36d1bac8a99fd 100644 --- a/drivers/irqchip/irq-armada-370-xp.c +++ b/drivers/irqchip/irq-armada-370-xp.c @@ -678,7 +678,7 @@ static void mpic_handle_cascade_irq(struct irq_desc *desc) cause = readl_relaxed(mpic->per_cpu + MPIC_PPI_CAUSE); cpuid = cpu_logical_map(smp_processor_id()); - for_each_set_bit(i, &cause, BITS_PER_LONG) { + for_each_set_bit(i, &cause, MPIC_PER_CPU_IRQS_NR) { irqsrc = readl_relaxed(mpic->base + MPIC_INT_SOURCE_CTL(i)); /* Check if the interrupt is not masked on current CPU.