From mboxrd@z Thu Jan  1 00:00:00 1970
From: Shreyansh Jain <shreyansh.jain@nxp.com>
Subject: Re: [PATCH v3 02/10] eal: probe new virtual bus after
 other bus devices
Date: Mon, 27 Feb 2017 14:29:43 +0530
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Cc: <david.marchand@6wind.com>, <ferruh.yigit@intel.com>
To: Jan Blunck <jblunck@infradead.org>, <dev@dpdk.org>
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On Saturday 25 February 2017 03:58 PM, Jan Blunck wrote:
> Also see commit f4ce209a ("eal: postpone vdev initialization").
>
> Signed-off-by: Jan Blunck <jblunck@infradead.org>
> ---
>  lib/librte_eal/common/eal_common_bus.c | 16 +++++++++++++++-
>  1 file changed, 15 insertions(+), 1 deletion(-)
>
> diff --git a/lib/librte_eal/common/eal_common_bus.c b/lib/librte_eal/common/eal_common_bus.c
> index 4638e78..8f9baf8 100644
> --- a/lib/librte_eal/common/eal_common_bus.c
> +++ b/lib/librte_eal/common/eal_common_bus.c
> @@ -86,9 +86,14 @@ int
>  rte_bus_probe(void)
>  {
>  	int ret;
> -	struct rte_bus *bus;
> +	struct rte_bus *bus, *vbus = NULL;
>
>  	TAILQ_FOREACH(bus, &rte_bus_list, next) {
> +		if (!strcmp(bus->name, "virtual")) {
> +			vbus = bus;
> +			continue;
> +		}
> +
>  		ret = bus->probe();
>  		if (ret) {
>  			RTE_LOG(ERR, EAL, "Bus (%s) probe failed.\n",
> @@ -97,6 +102,15 @@ rte_bus_probe(void)
>  		}
>  	}
>
> +	if (vbus) {
> +		ret = vbus->probe();
> +		if (ret) {
> +			RTE_LOG(ERR, EAL, "Bus (%s) probe failed.\n",
> +				vbus->name);
> +			return ret;
> +		}
> +	}
> +

This has probably changed to do away with priority of RTE_REGISTER_*
macro.

This is based on an assumption that there is only a single 'virtual'
bus and no driver ever registers another bus with the same name.

The problem originates from the fact that rte_bus_register is
_not_ checking for duplicate entries while registering.
(Apparently, it would be a problem in case of RTE_* macros as well).

I think that should be fixed.

If we are in sync, I will push a patch.

>  	return 0;
>  }
>
>