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Kernel/VirtIO: Ignore Configurations that have length of zero bytes
These configurations are simply invalid. Ignoring those allow us to boot with the virtio-gpu-pci device (in addition to the already supported virtio-vga PCI device).
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1 changed files with 3 additions and 0 deletions
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@ -113,6 +113,9 @@ UNMAP_AFTER_INIT void Device::initialize()
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}
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config.offset = capability.read32(0x8);
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config.length = capability.read32(0xc);
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// NOTE: Configuration length of zero is an invalid configuration that should be ignored.
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if (config.length == 0)
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continue;
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dbgln_if(VIRTIO_DEBUG, "{}: Found configuration {}, bar: {}, offset: {}, length: {}", m_class_name, (u32)config.cfg_type, config.bar, config.offset, config.length);
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if (config.cfg_type == ConfigurationType::Common)
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m_use_mmio = true;
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