linux-kernel - Re: [PATCH v5] crypto: qat - Replace the if statement with min()

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Date:   Tue, 4 Jul 2023 11:53:36 +0100
From:   Giovanni Cabiddu <giovanni.cabiddu@...el.com>
To:     You Kangren <youkangren@...o.com>
CC:     Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Tom Zanussi <tom.zanussi@...ux.intel.com>,
        Adam Guerin <adam.guerin@...el.com>,
        Damian Muszynski <damian.muszynski@...el.com>,
        Srinivas Kerekare <srinivas.kerekare@...el.com>,
        "Bruce W. Allan" <bruce.w.allan@...el.com>,
        Pingchaox Yang <pingchaox.yang@...el.com>,
        Bo Cui <bo.cui@...el.com>, Karen Xiang <karen.xiang@...el.com>,
        "open list:QAT DRIVER" <qat-linux@...el.com>,
        "open list:CRYPTO API" <linux-crypto@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        <opensource.kernel@...o.com>, <luhongfei@...o.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [PATCH v5] crypto: qat - Replace the if statement with min()

On Tue, Jul 04, 2023 at 05:42:07PM +0800, You Kangren wrote:
> Mark UWORD_CPYBUF_SIZE with U suffix to make its type the same with
> words_num and replace the if statement with min() in
I would separate this in two sentences.

> qat_uclo_wr_uimage_raw_page() to make code shorter.
> 
> Fixes: b4b7e67c917f ("crypto: qat - Intel(R) QAT ucode part of fw loader")
Why is this a fix?

NIT. On the headline of the commit message. Lower case after `-`.
See
    git log --pretty=oneline drivers/crypto/intel/qat/

BTW, you could reuse the commit message I proposed when I reworked the
same.

Regards,

-- 
Giovanni

> Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> Signed-off-by: You Kangren <youkangren@...o.com>
> ---
> Changelog:
> v4->v5: 
> - Add the Fixes and Reviewed-by tags of the patch
> - Add the version update information of the patch
> 
> v3->v4:
> - Remove the header file <linux/minmax.h> in v3
> 
> v2->v3:
> - Add a header file <linux/minmax.h>
> - Mark UWORD_CPYBUF_SIZE with U suffix
> - Change min_t() to min() in qat_uclo_wr_uimage_raw_page()
> 
> v1->v2:
> - Change min() to min_t() in qat_uclo_wr_uimage_raw_page()
>  
>  drivers/crypto/intel/qat/qat_common/qat_uclo.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/crypto/intel/qat/qat_common/qat_uclo.c b/drivers/crypto/intel/qat/qat_common/qat_uclo.c
> index ce837bcc1cab..4bd150d1441a 100644
> --- a/drivers/crypto/intel/qat/qat_common/qat_uclo.c
> +++ b/drivers/crypto/intel/qat/qat_common/qat_uclo.c
> @@ -11,7 +11,7 @@
>  #include "icp_qat_hal.h"
>  #include "icp_qat_fw_loader_handle.h"
>  
> -#define UWORD_CPYBUF_SIZE 1024
> +#define UWORD_CPYBUF_SIZE 1024U
>  #define INVLD_UWORD 0xffffffffffull
>  #define PID_MINOR_REV 0xf
>  #define PID_MAJOR_REV (0xf << 4)
> @@ -1986,10 +1986,7 @@ static void qat_uclo_wr_uimage_raw_page(struct icp_qat_fw_loader_handle *handle,
>  	uw_relative_addr = 0;
>  	words_num = encap_page->micro_words_num;
>  	while (words_num) {
> -		if (words_num < UWORD_CPYBUF_SIZE)
> -			cpylen = words_num;
> -		else
> -			cpylen = UWORD_CPYBUF_SIZE;
> +		cpylen = min(words_num, UWORD_CPYBUF_SIZE);
>  
>  		/* load the buffer */
>  		for (i = 0; i < cpylen; i++)
> -- 
> 2.39.0
>