linux-kernel - Re: [PATCH v2] s390: crypto: Use min() instead of doing it manually

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Message-ID: <YjBZR6WoHYj6fvzm@osiris>
Date:   Tue, 15 Mar 2022 10:15:51 +0100
From:   Heiko Carstens <hca@...ux.ibm.com>
To:     Haowen Bai <baihaowen@...zu.com>
Cc:     freude@...ux.ibm.com, gor@...ux.ibm.com, agordeev@...ux.ibm.com,
        linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] s390: crypto: Use min() instead of doing it manually

On Tue, Mar 15, 2022 at 04:01:04PM +0800, Haowen Bai wrote:
> Fix following coccicheck warning:
> drivers/s390/crypto/zcrypt_ep11misc.c:1112:25-26: WARNING opportunity for min()
> 
> Signed-off-by: Haowen Bai <baihaowen@...zu.com>
> ---
>  drivers/s390/crypto/zcrypt_ep11misc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/s390/crypto/zcrypt_ep11misc.c b/drivers/s390/crypto/zcrypt_ep11misc.c
> index 9ce5a71..bb2a527 100644
> --- a/drivers/s390/crypto/zcrypt_ep11misc.c
> +++ b/drivers/s390/crypto/zcrypt_ep11misc.c
> @@ -1109,7 +1109,7 @@ static int ep11_wrapkey(u16 card, u16 domain,
>  	if (kb->head.type == TOKTYPE_NON_CCA &&
>  	    kb->head.version == TOKVER_EP11_AES) {
>  		has_header = true;
> -		keysize = kb->head.len < keysize ? kb->head.len : keysize;
> +		keysize = min((size_t)kb->head.len, keysize);

I would assume that checkpatch will now warn that this is an
opportunity to use min_t()...
Anyway, it is up to Harald to decide what do with this.