From: Zhiyong Yang <zhiyong.yang@intel.com>
To: dev@dpdk.org
Cc: yliu@fridaylinux.org, maxime.coquelin@redhat.com,
stable@dpdk.org, Zhiyong Yang <zhiyong.yang@intel.com>
Subject: [dpdk-dev] [PATCH] net/virtio: fix wrong use_msix value for legacy device
Date: Wed, 27 Dec 2017 18:09:25 +0800 [thread overview]
Message-ID: <20171227100925.12953-1-zhiyong.yang@intel.com> (raw)
If virtio fails to detect modern device, use_misx should be reset
to VIRTIO_MSIX_NONE, otherwise this wrong value will be used after
legacy device detection succeeds to be done.
Fixes: fe19d49cb525 ("net/virtio: fix Rx interrupt with VFIO")
Cc: stable@dpdk.org
Signed-off-by: Zhiyong Yang <zhiyong.yang@intel.com>
---
drivers/net/virtio/virtio_pci.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/virtio/virtio_pci.c b/drivers/net/virtio/virtio_pci.c
index 9574498fb..5582238fd 100644
--- a/drivers/net/virtio/virtio_pci.c
+++ b/drivers/net/virtio/virtio_pci.c
@@ -695,6 +695,7 @@ vtpci_init(struct rte_pci_device *dev, struct virtio_hw *hw)
return 0;
}
+ hw->use_msix = VIRTIO_MSIX_NONE;
PMD_INIT_LOG(INFO, "trying with legacy virtio pci.");
if (rte_pci_ioport_map(dev, 0, VTPCI_IO(hw)) < 0) {
if (dev->kdrv == RTE_KDRV_UNKNOWN &&
--
2.13.3
next reply other threads:[~2017-12-27 10:09 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-27 10:09 Zhiyong Yang [this message]
2017-12-28 6:21 ` Yang, Zhiyong
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