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isa-bus: Remove bogus IRQ sharing check

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Nothing prevented IRQ sharing on the ISA bus in principle. Not all
boards supported this, neither each and every card nor driver and OS.
Still, there existed valid IRQ sharing scenarios, (at least) two of them
can also be found in QEMU: >2 PC UARTs and the PREP IDE buses.

So remove this artificial restriction from our ISA model.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Jan Kiszka 2011-02-19 18:56:22 +01:00 • committed by Aurelien Jarno
parent 7096a96db2
commit ee951a37d8
8 changed files with 10 additions and 21 deletions
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2
hw/ide/via.c
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@ -145,7 +145,7 @@ static void vt82c686b_init_ports(PCIIDEState *d) {
for (i = 0; i < 2; i++) {
ide_bus_new(&d->bus[i], &d->dev.qdev, i);
ide_init_ioport(&d->bus[i], port_info[i].iobase, port_info[i].iobase2);
ide_init2(&d->bus[i], isa_reserve_irq(port_info[i].isairq));
ide_init2(&d->bus[i], isa_get_irq(port_info[i].isairq));
bmdma_init(&d->bus[i], &d->bmdma[i]);
d->bmdma[i].bus = &d->bus[i];