* [PATCH v2] s390: crypto: Use min() instead of doing it manually
@ 2022-03-15 8:01 Haowen Bai
2022-03-15 9:15 ` Heiko Carstens
2022-03-15 10:05 ` David Laight
0 siblings, 2 replies; 5+ messages in thread
From: Haowen Bai @ 2022-03-15 8:01 UTC (permalink / raw)
To: freude, hca, gor, agordeev; +Cc: linux-s390, linux-kernel, Haowen Bai
Fix following coccicheck warning:
drivers/s390/crypto/zcrypt_ep11misc.c:1112:25-26: WARNING opportunity for min()
Signed-off-by: Haowen Bai <baihaowen@meizu.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);
}
/* request cprb and payload */
--
2.7.4
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH v2] s390: crypto: Use min() instead of doing it manually
2022-03-15 8:01 [PATCH v2] s390: crypto: Use min() instead of doing it manually Haowen Bai
@ 2022-03-15 9:15 ` Heiko Carstens
2022-03-15 9:25 ` 答复: " 白浩文
2022-03-15 10:05 ` David Laight
1 sibling, 1 reply; 5+ messages in thread
From: Heiko Carstens @ 2022-03-15 9:15 UTC (permalink / raw)
To: Haowen Bai; +Cc: freude, gor, agordeev, linux-s390, linux-kernel
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@meizu.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.
^ permalink raw reply [flat|nested] 5+ messages in thread
* 答复: [PATCH v2] s390: crypto: Use min() instead of doing it manually
2022-03-15 9:15 ` Heiko Carstens
@ 2022-03-15 9:25 ` 白浩文
0 siblings, 0 replies; 5+ messages in thread
From: 白浩文 @ 2022-03-15 9:25 UTC (permalink / raw)
To: Heiko Carstens; +Cc: freude, gor, agordeev, linux-s390, linux-kernel
hi, Heiko
Thank you for your reply and suggestion.
________________________________________
发件人: Heiko Carstens <hca@linux.ibm.com>
发送时间: 2022年3月15日 17:15:51
收件人: 白浩文
抄送: freude@linux.ibm.com; gor@linux.ibm.com; agordeev@linux.ibm.com; linux-s390@vger.kernel.org; linux-kernel@vger.kernel.org
主题: 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@meizu.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.
^ permalink raw reply [flat|nested] 5+ messages in thread
* RE: [PATCH v2] s390: crypto: Use min() instead of doing it manually
2022-03-15 8:01 [PATCH v2] s390: crypto: Use min() instead of doing it manually Haowen Bai
2022-03-15 9:15 ` Heiko Carstens
@ 2022-03-15 10:05 ` David Laight
2022-03-16 1:48 ` 答复: " 白浩文
1 sibling, 1 reply; 5+ messages in thread
From: David Laight @ 2022-03-15 10:05 UTC (permalink / raw)
To: 'Haowen Bai', freude, hca, gor, agordeev; +Cc: linux-s390, linux-kernel
From: Haowen Bai
> Sent: 15 March 2022 08:01
>
> Fix following coccicheck warning:
> drivers/s390/crypto/zcrypt_ep11misc.c:1112:25-26: WARNING opportunity for min()
>
> Signed-off-by: Haowen Bai <baihaowen@meizu.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'm sure that would look better as:
if (keysize > kb->head.len)
keysize = kb->head.len;
which makes it much more obvious that the existing value
is being limited by a new bound.
David
> }
>
> /* request cprb and payload */
> --
> 2.7.4
-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)
^ permalink raw reply [flat|nested] 5+ messages in thread
* 答复: [PATCH v2] s390: crypto: Use min() instead of doing it manually
2022-03-15 10:05 ` David Laight
@ 2022-03-16 1:48 ` 白浩文
0 siblings, 0 replies; 5+ messages in thread
From: 白浩文 @ 2022-03-16 1:48 UTC (permalink / raw)
To: David Laight, freude, hca, gor, agordeev; +Cc: linux-s390, linux-kernel
hi, David
Thank you for your reply, all is ok, just a coding style.
Ignore my patch.
________________________________________
发件人: David Laight <David.Laight@ACULAB.COM>
发送时间: 2022年3月15日 18:05:24
收件人: 白浩文; freude@linux.ibm.com; hca@linux.ibm.com; gor@linux.ibm.com; agordeev@linux.ibm.com
抄送: linux-s390@vger.kernel.org; linux-kernel@vger.kernel.org
主题: RE: [PATCH v2] s390: crypto: Use min() instead of doing it manually
From: Haowen Bai
> Sent: 15 March 2022 08:01
>
> Fix following coccicheck warning:
> drivers/s390/crypto/zcrypt_ep11misc.c:1112:25-26: WARNING opportunity for min()
>
> Signed-off-by: Haowen Bai <baihaowen@meizu.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'm sure that would look better as:
if (keysize > kb->head.len)
keysize = kb->head.len;
which makes it much more obvious that the existing value
is being limited by a new bound.
David
> }
>
> /* request cprb and payload */
> --
> 2.7.4
-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2022-03-16 1:48 UTC | newest]
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2022-03-15 8:01 [PATCH v2] s390: crypto: Use min() instead of doing it manually Haowen Bai
2022-03-15 9:15 ` Heiko Carstens
2022-03-15 9:25 ` 答复: " 白浩文
2022-03-15 10:05 ` David Laight
2022-03-16 1:48 ` 答复: " 白浩文
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