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device_manager: use if let to drop single match

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Signed-off-by: Wei Liu <liuwe@microsoft.com>
This commit is contained in:
Wei Liu 2022-01-18 15:46:20 +00:00 committed by Bo Chen
parent 4f05b8463c
commit 277cfd07ba
1 changed files with 6 additions and 10 deletions
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16
vmm/src/device_manager.rs
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@ -3445,24 +3445,20 @@ impl DeviceManager {
.map_err(DeviceManagerError::UpdateMemoryForVfioPciDevice)?; .map_err(DeviceManagerError::UpdateMemoryForVfioPciDevice)?;
} }
#[allow(clippy::single_match)]
// Take care of updating the memory for vfio-user devices. // Take care of updating the memory for vfio-user devices.
{ {
let device_tree = self.device_tree.lock().unwrap(); let device_tree = self.device_tree.lock().unwrap();
for pci_device_node in device_tree.pci_devices() { for pci_device_node in device_tree.pci_devices() {
match pci_device_node if let PciDeviceHandle::VfioUser(vfio_user_pci_device) = pci_device_node
.pci_device_handle .pci_device_handle
.as_ref() .as_ref()
.ok_or(DeviceManagerError::MissingPciDevice)? .ok_or(DeviceManagerError::MissingPciDevice)?
{ {
PciDeviceHandle::VfioUser(vfio_user_pci_device) => { vfio_user_pci_device
vfio_user_pci_device .lock()
.lock() .unwrap()
.unwrap() .dma_map(new_region)
.dma_map(new_region) .map_err(DeviceManagerError::UpdateMemoryForVfioUserPciDevice)?;
.map_err(DeviceManagerError::UpdateMemoryForVfioUserPciDevice)?;
}
_ => {}
} }
} }
} }