diff --git a/hw/hppa/machine.c b/hw/hppa/machine.c
index 7ac68c943f..8fea5fa6b8 100644
--- a/hw/hppa/machine.c
+++ b/hw/hppa/machine.c
@@ -98,7 +98,7 @@ static ISABus *hppa_isa_bus(void)
     isa_irqs = i8259_init(isa_bus,
                           /* qemu_allocate_irq(dino_set_isa_irq, s, 0)); */
                           NULL);
-    isa_bus_irqs(isa_bus, isa_irqs);
+    isa_bus_register_input_irqs(isa_bus, isa_irqs);
 
     return isa_bus;
 }
diff --git a/hw/i386/microvm.c b/hw/i386/microvm.c
index 29f30dd6d3..fed468a34d 100644
--- a/hw/i386/microvm.c
+++ b/hw/i386/microvm.c
@@ -174,7 +174,7 @@ static void microvm_devices_init(MicrovmMachineState *mms)
 
     isa_bus = isa_bus_new(NULL, get_system_memory(), get_system_io(),
                           &error_abort);
-    isa_bus_irqs(isa_bus, x86ms->gsi);
+    isa_bus_register_input_irqs(isa_bus, x86ms->gsi);
 
     ioapic_init_gsi(gsi_state, "machine");
     if (ioapics > 1) {
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index df64dd8dcc..7c48ba30e0 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -246,7 +246,7 @@ static void pc_init1(MachineState *machine,
         i8257_dma_init(isa_bus, 0);
         pcms->hpet_enabled = false;
     }
-    isa_bus_irqs(isa_bus, x86ms->gsi);
+    isa_bus_register_input_irqs(isa_bus, x86ms->gsi);
 
     if (x86ms->pic == ON_OFF_AUTO_ON || x86ms->pic == ON_OFF_AUTO_AUTO) {
         pc_i8259_create(isa_bus, gsi_state->i8259_irq);
diff --git a/hw/isa/i82378.c b/hw/isa/i82378.c
index d32653369d..233059c6dc 100644
--- a/hw/isa/i82378.c
+++ b/hw/isa/i82378.c
@@ -89,7 +89,7 @@ static void i82378_realize(PCIDevice *pci, Error **errp)
 
     /* 2 82C59 (irq) */
     s->isa_irqs_in = i8259_init(isabus, s->cpu_intr);
-    isa_bus_irqs(isabus, s->isa_irqs_in);
+    isa_bus_register_input_irqs(isabus, s->isa_irqs_in);
 
     /* 1 82C54 (pit) */
     pit = i8254_pit_init(isabus, 0x40, 0, NULL);
diff --git a/hw/isa/isa-bus.c b/hw/isa/isa-bus.c
index 2464357971..ce9999f7f7 100644
--- a/hw/isa/isa-bus.c
+++ b/hw/isa/isa-bus.c
@@ -67,13 +67,13 @@ ISABus *isa_bus_new(DeviceState *dev, MemoryRegion* address_space,
     return isabus;
 }
 
-void isa_bus_irqs(ISABus *bus, qemu_irq *irqs)
+void isa_bus_register_input_irqs(ISABus *bus, qemu_irq *irqs_in)
 {
-    bus->irqs = irqs;
+    bus->irqs_in = irqs_in;
 }
 
 /*
- * isa_get_irq() returns the corresponding qemu_irq entry for the i8259.
+ * isa_get_irq() returns the corresponding input qemu_irq entry for the i8259.
  *
  * This function is only for special cases such as the 'ferr', and
  * temporary use for normal devices until they are converted to qdev.
@@ -82,7 +82,7 @@ qemu_irq isa_get_irq(ISADevice *dev, unsigned isairq)
 {
     assert(!dev || ISA_BUS(qdev_get_parent_bus(DEVICE(dev))) == isabus);
     assert(isairq < ISA_NUM_IRQS);
-    return isabus->irqs[isairq];
+    return isabus->irqs_in[isairq];
 }
 
 void isa_connect_gpio_out(ISADevice *isadev, int gpioirq, unsigned isairq)
diff --git a/hw/isa/lpc_ich9.c b/hw/isa/lpc_ich9.c
index 96fd500502..d8303d0322 100644
--- a/hw/isa/lpc_ich9.c
+++ b/hw/isa/lpc_ich9.c
@@ -719,7 +719,7 @@ static void ich9_lpc_realize(PCIDevice *d, Error **errp)
 
     qdev_init_gpio_out_named(dev, lpc->gsi, ICH9_GPIO_GSI, IOAPIC_NUM_PINS);
 
-    isa_bus_irqs(isa_bus, lpc->gsi);
+    isa_bus_register_input_irqs(isa_bus, lpc->gsi);
 
     i8257_dma_init(isa_bus, 0);
 
diff --git a/hw/isa/piix4.c b/hw/isa/piix4.c
index de60ceef73..ef24826993 100644
--- a/hw/isa/piix4.c
+++ b/hw/isa/piix4.c
@@ -212,7 +212,7 @@ static void piix4_realize(PCIDevice *dev, Error **errp)
     s->isa = i8259_init(isa_bus, *i8259_out_irq);
 
     /* initialize ISA irqs */
-    isa_bus_irqs(isa_bus, s->isa);
+    isa_bus_register_input_irqs(isa_bus, s->isa);
 
     /* initialize pit */
     i8254_pit_init(isa_bus, 0x40, 0, NULL);
diff --git a/hw/isa/vt82c686.c b/hw/isa/vt82c686.c
index a913a509f7..52814cc751 100644
--- a/hw/isa/vt82c686.c
+++ b/hw/isa/vt82c686.c
@@ -615,7 +615,7 @@ static void via_isa_realize(PCIDevice *d, Error **errp)
     }
 
     s->isa_irqs_in = i8259_init(isa_bus, s->cpu_intr);
-    isa_bus_irqs(isa_bus, s->isa_irqs_in);
+    isa_bus_register_input_irqs(isa_bus, s->isa_irqs_in);
     i8254_pit_init(isa_bus, 0x40, 0, NULL);
     i8257_dma_init(isa_bus, 0);
 
diff --git a/hw/mips/jazz.c b/hw/mips/jazz.c
index 6aefe9a61b..ca4426a92c 100644
--- a/hw/mips/jazz.c
+++ b/hw/mips/jazz.c
@@ -249,7 +249,7 @@ static void mips_jazz_init(MachineState *machine,
 
     /* ISA devices */
     i8259 = i8259_init(isa_bus, env->irq[4]);
-    isa_bus_irqs(isa_bus, i8259);
+    isa_bus_register_input_irqs(isa_bus, i8259);
     i8257_dma_init(isa_bus, 0);
     pit = i8254_pit_init(isa_bus, 0x40, 0, NULL);
     pcspk_init(isa_new(TYPE_PC_SPEAKER), isa_bus, pit);
diff --git a/hw/ppc/pnv_lpc.c b/hw/ppc/pnv_lpc.c
index 71143b7692..01f44c19eb 100644
--- a/hw/ppc/pnv_lpc.c
+++ b/hw/ppc/pnv_lpc.c
@@ -837,7 +837,7 @@ ISABus *pnv_lpc_isa_create(PnvLpcController *lpc, bool use_cpld, Error **errp)
 
     irqs = qemu_allocate_irqs(handler, lpc, ISA_NUM_IRQS);
 
-    isa_bus_irqs(isa_bus, irqs);
+    isa_bus_register_input_irqs(isa_bus, irqs);
 
     return isa_bus;
 }
diff --git a/hw/sparc64/sun4u.c b/hw/sparc64/sun4u.c
index 8fe47e2c22..8a56ba9f98 100644
--- a/hw/sparc64/sun4u.c
+++ b/hw/sparc64/sun4u.c
@@ -316,7 +316,7 @@ static void ebus_realize(PCIDevice *pci_dev, Error **errp)
 
     /* ISA bus */
     s->isa_irqs_in = qemu_allocate_irqs(ebus_isa_irq_handler, s, ISA_NUM_IRQS);
-    isa_bus_irqs(s->isa_bus, s->isa_irqs_in);
+    isa_bus_register_input_irqs(s->isa_bus, s->isa_irqs_in);
     qdev_init_gpio_out_named(DEVICE(s), s->isa_irqs_out, "isa-irq",
                              ISA_NUM_IRQS);
 
diff --git a/include/hw/isa/isa.h b/include/hw/isa/isa.h
index 1d3ffec4de..eb920aa710 100644
--- a/include/hw/isa/isa.h
+++ b/include/hw/isa/isa.h
@@ -55,7 +55,7 @@ struct ISABus {
 
     MemoryRegion *address_space;
     MemoryRegion *address_space_io;
-    qemu_irq *irqs;
+    qemu_irq *irqs_in;
     IsaDma *dma[2];
 };
 
@@ -69,7 +69,7 @@ struct ISADevice {
 
 ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space,
                     MemoryRegion *address_space_io, Error **errp);
-void isa_bus_irqs(ISABus *bus, qemu_irq *irqs);
+void isa_bus_register_input_irqs(ISABus *bus, qemu_irq *irqs_in);
 void isa_bus_dma(ISABus *bus, IsaDma *dma8, IsaDma *dma16);
 IsaDma *isa_get_dma(ISABus *bus, int nchan);
 ISADevice *isa_new(const char *name);