We skip kernel managed virtio devices, if it isn't whitelisted.
Before checking if the virtio device is whitelisted, check if devargs is
specified.
Fixes: ac5e1d838dc1 ("virtio: skip error when probing kernel managed device")
Signed-off-by: Huawei Xie <huawei.xie at intel.com>
Reported-by: Vincent Li <vincent.mc.li at gmail.com>
---
v2: - add reported-by
- reword subject
- reword commit message
---
drivers/net/virtio/virtio_pci.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/virtio/virtio_pci.c b/drivers/net/virtio/virtio_pci.c
index d0f2428..60ec4da 100644
--- a/drivers/net/virtio/virtio_pci.c
+++ b/drivers/net/virtio/virtio_pci.c
@@ -626,6 +626,7 @@ next:
* Return -1:
* if there is error mapping with VFIO/UIO.
* if port map error when driver type is KDRV_NONE.
+ * if whitelisted but driver type is KDRV_UNKNOWN.
* Return 1 if kernel driver is managing the device.
* Return 0 on success.
*/
@@ -651,7 +652,8 @@ vtpci_init(struct rte_pci_device *dev, struct virtio_hw *hw,
PMD_INIT_LOG(INFO, "trying with legacy virtio pci.");
if (legacy_virtio_resource_init(dev, hw, dev_flags) < 0) {
if (dev->kdrv == RTE_KDRV_UNKNOWN &&
- dev->devargs->type != RTE_DEVTYPE_WHITELISTED_PCI) {
+ (!dev->devargs ||
+ dev->devargs->type != RTE_DEVTYPE_WHITELISTED_PCI)) {
PMD_INIT_LOG(INFO,
"skip kernel managed virtio device.");
return 1;
--
1.8.1.4
