irqchip/riscv-aplic: Use riscv_get_hart_index()

Use the global helper function instead of the local implementation.

Signed-off-by: Vladimir Kondratiev <vladimir.kondratiev@mobileye.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20250612143911.3224046-3-vladimir.kondratiev@mobileye.com

Author: vlkondratiev

drivers/irqchip/irq-riscv-aplic-direct.c

@@ -219,20 +219,6 @@ static int aplic_direct_parse_parent_hwirq(struct device *dev, u32 index,
 	return 0;
 }
 
-static int aplic_direct_get_hart_index(struct device *dev, u32 logical_index,
-				       u32 *hart_index)
-{
-	const char *prop_hart_index = "riscv,hart-indexes";
-	struct device_node *np = to_of_node(dev->fwnode);
-
-	if (!np || !of_property_present(np, prop_hart_index)) {
-		*hart_index = logical_index;
-		return 0;
-	}
-
-	return of_property_read_u32_index(np, prop_hart_index, logical_index, hart_index);
-}
-
 int aplic_direct_setup(struct device *dev, void __iomem *regs)
 {
 	int i, j, rc, cpu, current_cpu, setup_count = 0;
@@ -279,7 +265,7 @@ int aplic_direct_setup(struct device *dev, void __iomem *regs)
 		cpumask_set_cpu(cpu, &direct->lmask);
 
 		idc = per_cpu_ptr(&aplic_idcs, cpu);
-		rc = aplic_direct_get_hart_index(dev, i, &idc->hart_index);
+		rc = riscv_get_hart_index(dev->fwnode, i, &idc->hart_index);
 		if (rc) {
 			dev_warn(dev, "hart index not found for IDC%d\n", i);
 			continue;