From: Igor Ryzhov <iryzhov@nfware.com>
To: dev@dpdk.org
Cc: David Marchand <david.marchand@6wind.com>
Subject: [dpdk-dev] rte_eth_dev_attach returns 0, although device is not attached
Date: Wed, 3 Aug 2016 19:58:02 +0300 [thread overview]
Message-ID: <E1025756-36BA-4BC3-AA5D-279AE1025530@nfware.com> (raw)
Hello.
Function rte_eth_dev_attach can return false positive result.
It happens because rte_eal_pci_probe_one returns zero if no driver is found for the device:
ret = pci_probe_all_drivers(dev);
if (ret < 0)
goto err_return;
return 0;
(pci_probe_all_drivers returns 1 in that case)
For example, it can be easily reproduced by trying to attach virtio device, managed by kernel driver.
I think it should be:
ret = pci_probe_all_drivers(dev);
if (ret)
goto err_return;
return 0;
Best regards,
Igor
next reply other threads:[~2016-08-03 16:58 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-03 16:58 Igor Ryzhov [this message]
2016-08-04 11:33 ` Ferruh Yigit
2016-08-04 11:51 ` Igor Ryzhov
2016-08-04 13:21 ` Ferruh Yigit
2016-08-04 14:54 ` Igor Ryzhov
2016-08-04 15:47 ` Ferruh Yigit
2016-08-05 12:29 ` Bruce Richardson
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