On 4/15/21 8:06 PM, Tian Tao wrote:
> Since ccp_dev_suspend() and ccp_dev_resume() only return 0 which causes
> ret to equal 0 in sp_suspend and sp_resume, making the if condition
> impossible to use. it might be a more appropriate fix to have these be
> void functions and eliminate the if condition in sp_suspend() and
> sp_resume().
>
> Signed-off-by: Tian Tao <tiantao6@xxxxxxxxxxxxx>
> Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
> Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
> Cc: Tom Lendacky <thomas.lendacky@xxxxxxx>
Acked-by: Tom Lendacky <thomas.lendacky@xxxxxxx>
And please copy the maintainers associated with the files being patched
should you submit more patches in the future.
Thanks,
Tom
> ---
> v2: handle the case that didn't define CONFIG_CRYPTO_DEV_SP_CCP.
> ---
> drivers/crypto/ccp/ccp-dev.c | 12 ++++--------
> drivers/crypto/ccp/sp-dev.c | 12 ++----------
> drivers/crypto/ccp/sp-dev.h | 15 ++++-----------
> 3 files changed, 10 insertions(+), 29 deletions(-)
>
> diff --git a/drivers/crypto/ccp/ccp-dev.c b/drivers/crypto/ccp/ccp-dev.c
> index 0971ee6..6777582 100644
> --- a/drivers/crypto/ccp/ccp-dev.c
> +++ b/drivers/crypto/ccp/ccp-dev.c
> @@ -548,7 +548,7 @@ bool ccp_queues_suspended(struct ccp_device *ccp)
> return ccp->cmd_q_count == suspended;
> }
>
> -int ccp_dev_suspend(struct sp_device *sp)
> +void ccp_dev_suspend(struct sp_device *sp)
> {
> struct ccp_device *ccp = sp->ccp_data;
> unsigned long flags;
> @@ -556,7 +556,7 @@ int ccp_dev_suspend(struct sp_device *sp)
>
> /* If there's no device there's nothing to do */
> if (!ccp)
> - return 0;
> + return;
>
> spin_lock_irqsave(&ccp->cmd_lock, flags);
>
> @@ -572,11 +572,9 @@ int ccp_dev_suspend(struct sp_device *sp)
> while (!ccp_queues_suspended(ccp))
> wait_event_interruptible(ccp->suspend_queue,
> ccp_queues_suspended(ccp));
> -
> - return 0;
> }
>
> -int ccp_dev_resume(struct sp_device *sp)
> +void ccp_dev_resume(struct sp_device *sp)
> {
> struct ccp_device *ccp = sp->ccp_data;
> unsigned long flags;
> @@ -584,7 +582,7 @@ int ccp_dev_resume(struct sp_device *sp)
>
> /* If there's no device there's nothing to do */
> if (!ccp)
> - return 0;
> + return;
>
> spin_lock_irqsave(&ccp->cmd_lock, flags);
>
> @@ -597,8 +595,6 @@ int ccp_dev_resume(struct sp_device *sp)
> }
>
> spin_unlock_irqrestore(&ccp->cmd_lock, flags);
> -
> - return 0;
> }
>
> int ccp_dev_init(struct sp_device *sp)
> diff --git a/drivers/crypto/ccp/sp-dev.c b/drivers/crypto/ccp/sp-dev.c
> index 6284a15..7eb3e46 100644
> --- a/drivers/crypto/ccp/sp-dev.c
> +++ b/drivers/crypto/ccp/sp-dev.c
> @@ -213,12 +213,8 @@ void sp_destroy(struct sp_device *sp)
>
> int sp_suspend(struct sp_device *sp)
> {
> - int ret;
> -
> if (sp->dev_vdata->ccp_vdata) {
> - ret = ccp_dev_suspend(sp);
> - if (ret)
> - return ret;
> + ccp_dev_suspend(sp);
> }
>
> return 0;
> @@ -226,12 +222,8 @@ int sp_suspend(struct sp_device *sp)
>
> int sp_resume(struct sp_device *sp)
> {
> - int ret;
> -
> if (sp->dev_vdata->ccp_vdata) {
> - ret = ccp_dev_resume(sp);
> - if (ret)
> - return ret;
> + ccp_dev_resume(sp);
> }
>
> return 0;
> diff --git a/drivers/crypto/ccp/sp-dev.h b/drivers/crypto/ccp/sp-dev.h
> index 0218d06..20377e6 100644
> --- a/drivers/crypto/ccp/sp-dev.h
> +++ b/drivers/crypto/ccp/sp-dev.h
> @@ -134,8 +134,8 @@ struct sp_device *sp_get_psp_master_device(void);
> int ccp_dev_init(struct sp_device *sp);
> void ccp_dev_destroy(struct sp_device *sp);
>
> -int ccp_dev_suspend(struct sp_device *sp);
> -int ccp_dev_resume(struct sp_device *sp);
> +void ccp_dev_suspend(struct sp_device *sp);
> +void ccp_dev_resume(struct sp_device *sp);
>
> #else /* !CONFIG_CRYPTO_DEV_SP_CCP */
>
> @@ -144,15 +144,8 @@ static inline int ccp_dev_init(struct sp_device *sp)
> return 0;
> }
> static inline void ccp_dev_destroy(struct sp_device *sp) { }
> -
> -static inline int ccp_dev_suspend(struct sp_device *sp)
> -{
> - return 0;
> -}
> -static inline int ccp_dev_resume(struct sp_device *sp)
> -{
> - return 0;
> -}
> +static inline void ccp_dev_suspend(struct sp_device *sp) { }
> +static inline void ccp_dev_resume(struct sp_device *sp) { }
> #endif /* CONFIG_CRYPTO_DEV_SP_CCP */
>
> #ifdef CONFIG_CRYPTO_DEV_SP_PSP
>
