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Diffstat (limited to 'hw')
-rw-r--r--hw/virtio/virtio-pci.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 6ca0258067..c5e8cc041f 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -546,7 +546,8 @@ static void virtio_write_config(PCIDevice *pci_dev, uint32_t address,
off = le32_to_cpu(cfg->cap.offset);
len = le32_to_cpu(cfg->cap.length);
- if (len <= sizeof cfg->pci_cfg_data) {
+ if (len == 1 || len == 2 || len == 4) {
+ assert(len <= sizeof cfg->pci_cfg_data);
virtio_address_space_write(&proxy->modern_as, off,
cfg->pci_cfg_data, len);
}
@@ -570,7 +571,8 @@ static uint32_t virtio_read_config(PCIDevice *pci_dev,
off = le32_to_cpu(cfg->cap.offset);
len = le32_to_cpu(cfg->cap.length);
- if (len <= sizeof cfg->pci_cfg_data) {
+ if (len == 1 || len == 2 || len == 4) {
+ assert(len <= sizeof cfg->pci_cfg_data);
virtio_address_space_read(&proxy->modern_as, off,
cfg->pci_cfg_data, len);
}