If the device is not capable of resetting, then Linux kernel updates
the errno as EINVAL.
http://elixir.free-electrons.com/linux/v4.9/source/drivers/vfio/pci/vfio_pci.c#L887
Honor the EINVAL errno value to avoid pci vfio setup failure.
Fixes: f25f8f367644 ("bus/pci: check VFIO reset ioctl error")
Cc: Jonas Pfefferle <j...@zurich.ibm.com>
Cc: Anatoly Burakov <anatoly.bura...@intel.com>
Signed-off-by: Jerin Jacob <jerin.ja...@caviumnetworks.com>
---
drivers/bus/pci/linux/pci_vfio.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/bus/pci/linux/pci_vfio.c b/drivers/bus/pci/linux/pci_vfio.c
index 360eed380..11df64846 100644
--- a/drivers/bus/pci/linux/pci_vfio.c
+++ b/drivers/bus/pci/linux/pci_vfio.c
@@ -338,8 +338,11 @@ pci_vfio_setup_device(struct rte_pci_device *dev, int
vfio_dev_fd)
return -1;
}
- /* Reset the device */
- if (ioctl(vfio_dev_fd, VFIO_DEVICE_RESET)) {
+ /*
+ * Reset the device. If the device is not capable of resetting,
+ * then it updates errno as EINVAL.
+ */
+ if (ioctl(vfio_dev_fd, VFIO_DEVICE_RESET) && errno != EINVAL) {
RTE_LOG(ERR, EAL, "Unable to reset device! Error: %d (%s)\n",
errno, strerror(errno));
return -1;
--
2.14.3
