From: Hongyu Xie <xiehongyu1@kylinos.cn>

cdns->role_sw->dev->driver_data gets set in routines showing bellow,
cdns_init
  sw_desc.driver_data = cdns;
  cdns->role_sw = usb_role_switch_register(dev, &sw_desc);
    dev_set_drvdata(&sw->dev, desc->driver_data);

In cdns_resume,
cdns->role = cdns_role_get(cdns->role_sw); //line redundant
  struct cdns *cdns = usb_role_switch_get_drvdata(sw);
    dev_get_drvdata(&sw->dev)
      return dev->driver_data
return cdns->role;

"line redundant" equals to,
	cdns->role = cdns->role;

So fix this if branch.

Fixes: 2cf2581cd229 ("usb: cdns3: add power lost support for system resume")
Signed-off-by: Hongyu Xie <xiehongyu1@kylinos.cn>
---
 drivers/usb/cdns3/core.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c
index 465e9267b49c..98980a23e1c2 100644
--- a/drivers/usb/cdns3/core.c
+++ b/drivers/usb/cdns3/core.c
@@ -529,9 +529,7 @@ int cdns_resume(struct cdns *cdns)
 	int ret = 0;
 
 	if (cdns_power_is_lost(cdns)) {
-		if (cdns->role_sw) {
-			cdns->role = cdns_role_get(cdns->role_sw);
-		} else {
+		if (!cdns->role_sw) {
 			real_role = cdns_hw_role_state_machine(cdns);
 			if (real_role != cdns->role) {
 				ret = cdns_hw_role_switch(cdns);
-- 
2.25.1

On 24-12-30 16:38:55, xiehongyu1@kylinos.cn wrote:
> From: Hongyu Xie <xiehongyu1@kylinos.cn>
> 
> cdns->role_sw->dev->driver_data gets set in routines showing bellow,

%s/bellow/below, others are okay for me.

> cdns_init
>   sw_desc.driver_data = cdns;
>   cdns->role_sw = usb_role_switch_register(dev, &sw_desc);
>     dev_set_drvdata(&sw->dev, desc->driver_data);
> 
> In cdns_resume,
> cdns->role = cdns_role_get(cdns->role_sw); //line redundant
>   struct cdns *cdns = usb_role_switch_get_drvdata(sw);
>     dev_get_drvdata(&sw->dev)
>       return dev->driver_data
> return cdns->role;
> 
> "line redundant" equals to,
> 	cdns->role = cdns->role;
> 
> So fix this if branch.
> 
> Fixes: 2cf2581cd229 ("usb: cdns3: add power lost support for system resume")
> Signed-off-by: Hongyu Xie <xiehongyu1@kylinos.cn>

Acked-by: Peter Chen <peter.chen@kernel.org>

> ---
>  drivers/usb/cdns3/core.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c
> index 465e9267b49c..98980a23e1c2 100644
> --- a/drivers/usb/cdns3/core.c
> +++ b/drivers/usb/cdns3/core.c
> @@ -529,9 +529,7 @@ int cdns_resume(struct cdns *cdns)
>  	int ret = 0;
>  
>  	if (cdns_power_is_lost(cdns)) {
> -		if (cdns->role_sw) {
> -			cdns->role = cdns_role_get(cdns->role_sw);
> -		} else {
> +		if (!cdns->role_sw) {
>  			real_role = cdns_hw_role_state_machine(cdns);
>  			if (real_role != cdns->role) {
>  				ret = cdns_hw_role_switch(cdns);
> -- 
> 2.25.1
>