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hw/pci: Assert a bar is not registered multiple times

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Nothing should be doing this, but it doesn't get caught by
pci_register_bar(). Add an assertion to prevent misuse.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20250117172842.406338-3-npiggin@gmail.com>
Reviewed-by: Phil Dennis-Jordan <phil@philjordan.eu>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Phil Dennis-Jordan <phil@philjordan.eu>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Nicholas Piggin 2025-01-18 03:28:41 +10:00 • committed by Michael S. Tsirkin
parent 44ed44aefe
commit f6fc01c786
1 changed files with 1 additions and 0 deletions
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hw/pci/pci.c
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@ -1398,6 +1398,7 @@ void pci_register_bar(PCIDevice *pci_dev, int region_num,
assert(hdr_type != PCI_HEADER_TYPE_BRIDGE || region_num < 2);
r = &pci_dev->io_regions[region_num];
assert(!r->size);
r->addr = PCI_BAR_UNMAPPED;
r->size = size;
r->type = type;