bus/pci: fix generic driver pointer on probe error

The field is set but never resetted on error.
This marks the device as being attached while it is not, and forbid
further attempts to hotplug it.

Fixes: 7917d5f5ea46 ("pci: initialize generic driver pointer")
Cc: stable@dpdk.org
Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>

diff --git a/lib/librte_eal/common/eal_common_pci.c b/lib/librte_eal/common/eal_common_pci.c
index 45e697eb1cd62cc423a0c68f4a683a796056c0bc..0a4062cd90575ca85b1080bf157911af002be20f 100644 (file)
--- a/lib/librte_eal/common/eal_common_pci.c
+++ b/lib/librte_eal/common/eal_common_pci.c
@@ -245,6 +245,7 @@ rte_pci_probe_one_driver(struct rte_pci_driver *dr,
        ret = dr->probe(dr, dev);
        if (ret) {
                dev->driver = NULL;
+               dev->device.driver = NULL;
                if ((dr->drv_flags & RTE_PCI_DRV_NEED_MAPPING) &&
                        /* Don't unmap if device is unsupported and
                         * driver needs mapped resources.