linux-kernel - Re: [PATCH] crypto: arm64: Use PTR_ERR_OR

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Date:   Thu, 5 Sep 2019 14:25:27 +0800
From:   zhong jiang <zhongjiang@...wei.com>
To:     Will Deacon <will@...nel.org>, <herbert@...dor.apana.org.au>
CC:     <davem@...emloft.net>, <catalin.marinas@....com>,
        <linux-crypto@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] crypto: arm64: Use PTR_ERR_OR_ZERO rather than its implementation.

On 2019/9/4 18:25, Will Deacon wrote:
> On Tue, Sep 03, 2019 at 02:54:16PM +0800, zhong jiang wrote:
>> PTR_ERR_OR_ZERO contains if(IS_ERR(...)) + PTR_ERR. It is better to
>> use it directly. hence just replace it.
>>
>> Signed-off-by: zhong jiang <zhongjiang@...wei.com>
>> ---
>>  arch/arm64/crypto/aes-glue.c | 4 +---
>>  1 file changed, 1 insertion(+), 3 deletions(-)
>>
>> diff --git a/arch/arm64/crypto/aes-glue.c b/arch/arm64/crypto/aes-glue.c
>> index ca0c84d..2a2e0a3 100644
>> --- a/arch/arm64/crypto/aes-glue.c
>> +++ b/arch/arm64/crypto/aes-glue.c
>> @@ -409,10 +409,8 @@ static int essiv_cbc_init_tfm(struct crypto_skcipher *tfm)
>>  	struct crypto_aes_essiv_cbc_ctx *ctx = crypto_skcipher_ctx(tfm);
>>  
>>  	ctx->hash = crypto_alloc_shash("sha256", 0, 0);
>> -	if (IS_ERR(ctx->hash))
>> -		return PTR_ERR(ctx->hash);
>>  
>> -	return 0;
>> +	return PTR_ERR_OR_ZERO(ctx->hash);
>>  }
>>  
>>  static void essiv_cbc_exit_tfm(struct crypto_skcipher *tfm)
> Acked-by: Will Deacon <will@...nel.org>
Thanks.

Sincerely,
zhong jiang
> Assuming this will go via Herbert.
>
> Will
>
> .
>