Re: [PATCH -next] staging: vc04_services: remove set but unused variable 'local_entity_uc'

[Dan Carpenter <dan.carpenter@oracle.com>]

On Tue, Feb 11, 2020 at 09:43:56PM +0800, YueHaibing wrote:
> drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c: In function vchiq_use_internal:
> drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c:2346:16:
>  warning: variable local_entity_uc set but not used [-Wunused-but-set-variable]
> 
> commit bd8aa2850f00 ("staging: vc04_services: Get of even more suspend/resume states")
> left behind this unused variable.
> 
> Reported-by: Hulk Robot <hulkci@huawei.com>
> Signed-off-by: YueHaibing <yuehaibing@huawei.com>
> ---
>  drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
> index c456ced..d30d24d 100644
> --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
> +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
> @@ -2343,7 +2343,7 @@ vchiq_use_internal(struct vchiq_state *state, struct vchiq_service *service,
>  	enum vchiq_status ret = VCHIQ_SUCCESS;
>  	char entity[16];
>  	int *entity_uc;
> -	int local_uc, local_entity_uc;
> +	int local_uc;
>  
>  	if (!arm_state)
>  		goto out;
> @@ -2367,7 +2367,6 @@ vchiq_use_internal(struct vchiq_state *state, struct vchiq_service *service,
>  
>  	write_lock_bh(&arm_state->susp_res_lock);
>  	local_uc = ++arm_state->videocore_use_count;
> -	local_entity_uc = ++(*entity_uc);
                          ^^
This ++ is required.

regards,
dan carpenter