irqchip/armada-370-xp: Don't read number of supported interrupts multiple times

Use mpic_domain::hwirq_max at runtime instead of reading the same value
over and over from the MPIC_INT_CONTROL register.

Signed-off-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/all/20240711115748.30268-8-kabel@kernel.org

diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c
index 27588347189e109bea8a19dc5d7b3b572f03748e..e43eb26ab6e7110007422b2d950e966925a74623 100644 (file)
--- a/drivers/irqchip/irq-armada-370-xp.c
+++ b/drivers/irqchip/irq-armada-370-xp.c
@@ -494,13 +494,7 @@ static int mpic_set_affinity(struct irq_data *d, const struct cpumask *mask_val,
 
 static void mpic_smp_cpu_init(void)
 {
-       u32 control;
-       int nr_irqs;
-
-       control = readl(main_int_base + MPIC_INT_CONTROL);
-       nr_irqs = (control >> 2) & 0x3ff;
-
-       for (int i = 0; i < nr_irqs; i++)
+       for (int i = 0; i < mpic_domain->hwirq_max; i++)
                writel(i, per_cpu_int_base + MPIC_INT_SET_MASK);
 
        if (!mpic_is_ipi_available())
@@ -706,10 +700,9 @@ static int mpic_suspend(void)
 static void mpic_resume(void)
 {
        bool src0, src1;
-       int nirqs;
+
        /* Re-enable interrupts */
-       nirqs = (readl(main_int_base + MPIC_INT_CONTROL) >> 2) & 0x3ff;
-       for (irq_hw_number_t irq = 0; irq < nirqs; irq++) {
+       for (irq_hw_number_t irq = 0; irq < mpic_domain->hwirq_max; irq++) {
                struct irq_data *data;
                unsigned int virq;