[dpdk-stable] [PATCH v2] net/ring: fix eth_dev device pointer on allocation

[Ferruh Yigit]

On 5/6/2020 7:09 PM, Gaetan Rivet wrote:
> When a net_ring device is allocated, its device pointer is not set
> before calling rte_eth_dev_probing_finish, which is incorrect.
> 
> The following:
>   commit: 96cb19521147 ("net/ring: use EAL APIs in PMD specific API")
>   commit: a6992e961050 ("net/ring: set ethernet device field")
> 
> already fixed the same issue in 17.08, which was fine at the time.
> Adding the hook rte_eth_dev_probing_finish() however created this bug,
> as the eth_dev exposed when this hook is executed is expected to be
> complete.
> 
> Remove the prior attempts to fix the issue in rte_pmd_ring_probe() and
> write the pointer properly in do_eth_dev_ring_create().
> 
> Cc: stable at dpdk.org
> Fixes: fbe90cdd776c ("ethdev: add probing finish function")
> Signed-off-by: Gaetan Rivet <grive at u256.net>

I would prefer moving the assignment up in the stack where 'device' is
available, instead of moving the variable down in the stack to assign it, but
both does the work ...

Reviewed-by: Ferruh Yigit <ferruh.yigit at intel.com>