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X-Received-From: 2a00:1450:4864:20::335 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) 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-Daud=C3=A9. Signed-off-by: Paolo Bonzini --- hw/isa/isa-bus.c | 11 +++++++---- include/hw/isa/isa.h | 8 ++++---- 2 files changed, 11 insertions(+), 8 deletions(-) diff --git a/hw/isa/isa-bus.c b/hw/isa/isa-bus.c index 3888006..798dd91 100644 --- a/hw/isa/isa-bus.c +++ b/hw/isa/isa-bus.c @@ -82,24 +82,27 @@ void isa_bus_irqs(ISABus *bus, qemu_irq *irqs) * This function is only for special cases such as the 'ferr', and * temporary use for normal devices until they are converted to qdev. */ -qemu_irq isa_get_irq(ISADevice *dev, int isairq) +qemu_irq isa_get_irq(ISADevice *dev, unsigned isairq) { assert(!dev || ISA_BUS(qdev_get_parent_bus(DEVICE(dev))) =3D=3D isabus= ); - if (isairq < 0 || isairq > 15) { + if (isairq >=3D ISA_NUM_IRQS) { hw_error("isa irq %d invalid", isairq); } return isabus->irqs[isairq]; } =20 -void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq) +void isa_init_irq(ISADevice *dev, qemu_irq *p, unsigned isairq) { assert(dev->nirqs < ARRAY_SIZE(dev->isairq)); + if (isairq >=3D ISA_NUM_IRQS) { + hw_error("isa irq %d invalid", isairq); + } dev->isairq[dev->nirqs] =3D isairq; *p =3D isa_get_irq(dev, isairq); dev->nirqs++; } =20 -void isa_connect_gpio_out(ISADevice *isadev, int gpioirq, int isairq) +void isa_connect_gpio_out(ISADevice *isadev, int gpioirq, unsigned isairq) { qemu_irq irq; isa_init_irq(isadev, &irq, isairq); diff --git a/include/hw/isa/isa.h b/include/hw/isa/isa.h index 79f703f..e9ac1f1 100644 --- a/include/hw/isa/isa.h +++ b/include/hw/isa/isa.h @@ -88,7 +88,7 @@ struct ISADevice { DeviceState parent_obj; /*< public >*/ =20 - uint32_t isairq[2]; + int8_t isairq[2]; /* -1 =3D 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); --=20 1.8.3.1