[dpdk-dev] [PATCH 2/4] bus/pci: reference driver structure

[Rafał Kozik]

2018-06-27 18:36 GMT+02:00 Ferruh Yigit <ferruh.yigit at intel.com>:
> On 4/11/2018 3:07 PM, Rafal Kozik wrote:
>> Reference driver structure before calling rte_pci_map_device.
>> It allow to use driver flags for adjusting configuration.
>>
>> Signed-off-by: Rafal Kozik <rk at semihalf.com>
>> ---
>>  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.
>

I will fix it in new, rebased patch set.

>> +
>>       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) {
>>
>