On Tue, May 05, 2020 at 07:10:20PM +0530, Calvin Johnson wrote:
> fwnode_find_reference() doesn't return NULL and hence that check
> should be avoided.
> 
> Signed-off-by: Calvin Johnson <[email protected]>
> ---
> 
>  drivers/hwtracing/coresight/coresight-cti-platform.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/hwtracing/coresight/coresight-cti-platform.c 
> b/drivers/hwtracing/coresight/coresight-cti-platform.c
> index b44d83142b62..2fdaeec80ee5 100644
> --- a/drivers/hwtracing/coresight/coresight-cti-platform.c
> +++ b/drivers/hwtracing/coresight/coresight-cti-platform.c
> @@ -120,7 +120,7 @@ static int cti_plat_create_v8_etm_connection(struct 
> device *dev,
>  
>       /* Can optionally have an etm node - return if not  */
>       cs_fwnode = fwnode_find_reference(root_fwnode, CTI_DT_CSDEV_ASSOC, 0);
> -     if (IS_ERR_OR_NULL(cs_fwnode))
> +     if (IS_ERR(cs_fwnode))
>               return 0;
>  
>       /* allocate memory */
> @@ -393,7 +393,7 @@ static int cti_plat_create_connection(struct device *dev,
>               /* associated device ? */
>               cs_fwnode = fwnode_find_reference(fwnode,
>                                                 CTI_DT_CSDEV_ASSOC, 0);
> -             if (!IS_ERR_OR_NULL(cs_fwnode)) {
> +             if (!IS_ERR(cs_fwnode)) {
>                       assoc_name = cti_plat_get_csdev_or_node_name(cs_fwnode,
>                                                                    &csdev);

You are correct.

Reviewed-by: Mathieu Poirier <[email protected]>

Greg, can you pick this up as a fix for 5.7?

Thanks,
Mathieu

>                       fwnode_handle_put(cs_fwnode);
> -- 
> 2.17.1
> 

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