Thread (54 messages) 54 messages, 5 authors, 2018-07-02

Re: [PATCH 2/4] bus/pci: reference driver structure

From: Ferruh Yigit <hidden>
Date: 2018-06-27 16:36:15

On 4/11/2018 3:07 PM, Rafal Kozik wrote:
quoted hunk ↗ jump to hunk
Reference driver structure before calling rte_pci_map_device.
It allow to use driver flags for adjusting configuration.

Signed-off-by: Rafal Kozik <redacted>
---
 drivers/bus/pci/pci_common.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/bus/pci/pci_common.c b/drivers/bus/pci/pci_common.c
index 2a00f36..15e9a47 100644
--- a/drivers/bus/pci/pci_common.c
+++ b/drivers/bus/pci/pci_common.c
@@ -159,17 +159,20 @@ rte_pci_probe_one_driver(struct rte_pci_driver *dr,
 	RTE_LOG(INFO, EAL, "  probe driver: %x:%x %s\n", dev->id.vendor_id,
 		dev->id.device_id, dr->driver.name);
 
+	/* reference driver structure */
+	dev->driver = dr;
+	dev->device.driver = &dr->driver;
It can be good to comment that this needs to be before rte_pci_map_device()
incase someone wants to refactor code later.
+
 	if (dr->drv_flags & RTE_PCI_DRV_NEED_MAPPING) {
 		/* map resources for devices that use igb_uio */
 		ret = rte_pci_map_device(dev);
-		if (ret != 0)
+		if (ret != 0) {
+			dev->driver = NULL;
+			dev->device.driver = NULL;
 			return ret;
+		}
 	}
 
-	/* reference driver structure */
-	dev->driver = dr;
-	dev->device.driver = &dr->driver;
-
 	/* call the driver probe() function */
 	ret = dr->probe(dr, dev);
 	if (ret) {
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