[dpdk-dev] [PATCH] eal: fix device hotplug

[Maxime Coquelin]

On 11/2/21 08:52, David Marchand wrote:
> The device event interrupt handler was always freed.
> 
> Bugzilla ID: 845
> Fixes: c2bd9367e18f ("lib: remove direct access to interrupt handle")
> 
> Signed-off-by: David Marchand <david.marchand at redhat.com>
> ---
>   lib/eal/linux/eal_dev.c | 12 +++++++++---
>   1 file changed, 9 insertions(+), 3 deletions(-)
> 
> diff --git a/lib/eal/linux/eal_dev.c b/lib/eal/linux/eal_dev.c
> index 06820a3666..925cdba553 100644
> --- a/lib/eal/linux/eal_dev.c
> +++ b/lib/eal/linux/eal_dev.c
> @@ -317,10 +317,12 @@ rte_dev_event_monitor_start(void)
>   		goto exit;
>   	}
>   
> -	if (rte_intr_type_set(intr_handle, RTE_INTR_HANDLE_DEV_EVENT))
> +	ret = rte_intr_type_set(intr_handle, RTE_INTR_HANDLE_DEV_EVENT);
> +	if (ret)
>   		goto exit;
>   
> -	if (rte_intr_fd_set(intr_handle, -1))
> +	ret = rte_intr_fd_set(intr_handle, -1);
> +	if (ret)
>   		goto exit;
>   
>   	ret = dev_uev_socket_fd_create();
> @@ -339,7 +341,10 @@ rte_dev_event_monitor_start(void)
>   	monitor_refcount++;
>   
>   exit:
> -	rte_intr_instance_free(intr_handle);
> +	if (ret) {
> +		rte_intr_instance_free(intr_handle);
> +		intr_handle = NULL;
> +	}
>   	rte_rwlock_write_unlock(&monitor_lock);
>   	return ret;
>   }
> @@ -370,6 +375,7 @@ rte_dev_event_monitor_stop(void)
>   
>   	close(rte_intr_fd_get(intr_handle));
>   	rte_intr_instance_free(intr_handle);
> +	intr_handle = NULL;
>   
>   	monitor_refcount--;
>   
> 

Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>

Thanks,
Maxime