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hw/isa/isa-bus: cleanup irq functions

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The irq number is unsigned; we reject negative values.  But -1
is used for the isairq array, which is declared unsigned!  And
since we have a definition for the number of ISA IRQs, use it.

Based on a patch by Philippe Mathieu-Daudé.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2019-12-13 13:00:43 +01:00
parent 14a1bb48ea
commit 3c29e18841
2 changed files with 11 additions and 8 deletions
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8
include/hw/isa/isa.h
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@ -88,7 +88,7 @@ struct ISADevice {
DeviceState parent_obj;
/*< public >*/
uint32_t isairq[2];
int8_t isairq[2]; /* -1 = unassigned */
int nirqs;
int ioport_id;
};
@ -96,9 +96,9 @@ 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);
qemu_irq isa_get_irq(ISADevice *dev, int isairq);
void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq);
void isa_connect_gpio_out(ISADevice *isadev, int gpioirq, int isairq);
qemu_irq isa_get_irq(ISADevice *dev, unsigned isairq);
void isa_init_irq(ISADevice *dev, qemu_irq *p, unsigned isairq);
void isa_connect_gpio_out(ISADevice *isadev, int gpioirq, unsigned isairq);
void isa_bus_dma(ISABus *bus, IsaDma *dma8, IsaDma *dma16);
IsaDma *isa_get_dma(ISABus *bus, int nchan);
MemoryRegion *isa_address_space(ISADevice *dev);