[PATCH v4 8/8] coresight: Unify bus unregistration via coresight_unregister()

[James Clark]

On 09/02/2026 12:44 pm, Leo Yan wrote:
> Once a device is successfully registered, set the "registered" flag to
> true.  After that point, all failures jump to the out_unlock label to
> unwind the flow via coresight_unregister().
> 
> Since failure handling is unified, the comment about resource release
> for the etm_perf_add_symlink_sink() failure is no need, remove it.
> 
> Signed-off-by: Leo Yan <leo.yan at arm.com>
> ---
>   drivers/hwtracing/coresight/coresight-core.c | 15 ++++-----------
>   1 file changed, 4 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c
> index 955af43010446803030973c72f07315492b2fcf3..56320ce49cb23bf7168f69b7f1ad820ca83b8365 100644
> --- a/drivers/hwtracing/coresight/coresight-core.c
> +++ b/drivers/hwtracing/coresight/coresight-core.c
> @@ -1383,20 +1383,13 @@ struct coresight_device *coresight_register(struct coresight_desc *desc)
>   		goto out_unlock;
>   	}
>   
> -	ret = etm_perf_add_symlink_sink(csdev);
> -
> -	/*
> -	 * As with the above, all resources are free'd explicitly via
> -	 * coresight_device_release() triggered from put_device(), which is in
> -	 * turn called from function device_unregister().
> -	 */
> -	if (ret && ret != -EOPNOTSUPP) {
> -		device_unregister(&csdev->dev);
> -		goto out_unlock;
> -	}
>   	/* Device is now registered */
>   	registered = true;
>   
> +	ret = etm_perf_add_symlink_sink(csdev);
> +	if (ret && ret != -EOPNOTSUPP)
> +		goto out_unlock;
> +
>   	ret = coresight_create_conns_sysfs_group(csdev);
>   	if (ret)
>   		goto out_unlock;
> 

Reviewed-by: James Clark <james.clark at linaro.org>