[dpdk-dev] [PATCH] pci: Don't call probe callback if driver already loaded.

[Ben Walker <benjamin.walker@intel.com>]

If the user asks to probe multiple times, the probe
callback should only be called on devices that don't have
a driver already loaded.

This is useful if a driver is registered after the
execution of a program has started and the list of devices
needs to be re-scanned.

Signed-off-by: Ben Walker <benjamin.walker@intel.com>
---
 lib/librte_eal/common/eal_common_pci.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/librte_eal/common/eal_common_pci.c b/lib/librte_eal/common/eal_common_pci.c
index 638cd86..971ad20 100644
--- a/lib/librte_eal/common/eal_common_pci.c
+++ b/lib/librte_eal/common/eal_common_pci.c
@@ -289,6 +289,10 @@ pci_probe_all_drivers(struct rte_pci_device *dev)
 	if (dev == NULL)
 		return -1;
 
+	/* Check if a driver is already loaded */
+	if (dev->driver != NULL)
+		return 0;
+
 	TAILQ_FOREACH(dr, &pci_driver_list, next) {
 		rc = rte_eal_pci_probe_one_driver(dr, dev);
 		if (rc < 0)
-- 
2.7.4