linux-kernel - Re: [PATCH] drivers: message: fusion: Simplify rounding

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Message-ID: <87y4v29e4d.fsf@rasmusvillemoes.dk>
Date:	Wed, 06 Aug 2014 11:11:30 +0200
From:	Rasmus Villemoes <linux@...musvillemoes.dk>
To:	Joe Lawrence <joe.lawrence@...atus.com>
Cc:	Sreekanth Reddy <Sreekanth.Reddy@....com>,
	<DL-MPTFusionLinux@....com>, <linux-scsi@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drivers: message: fusion: Simplify rounding

Joe Lawrence <joe.lawrence@...atus.com> writes:

> On Tue, 1 Jul 2014, Rasmus Villemoes wrote:
>
>> Rounding up to a multiple of 4 should be done using the ALIGN
>> macro. As a bonus, this also makes the generated code smaller.
>> 
>> In GetIocFacts(), sz is assigned to a few lines below without being
>> read in the meantime, so it is ok that it doesn't end up with the same
>> value as facts->FWImageSize.
>> 
>> Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk>
>> ---
>>  drivers/message/fusion/mptbase.c | 7 +------
>>  drivers/message/fusion/mptctl.c  | 7 +------
>>  2 files changed, 2 insertions(+), 12 deletions(-)
>> 
>> diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
>> index ebc0af7..10b16a1 100644
>> --- a/drivers/message/fusion/mptbase.c
>> +++ b/drivers/message/fusion/mptbase.c
>> @@ -3175,12 +3175,7 @@ GetIocFacts(MPT_ADAPTER *ioc, int sleepFlag, int reason)
>>  			facts->FWImageSize = le32_to_cpu(facts->FWImageSize);
>>  		}
>>  
>> -		sz = facts->FWImageSize;
>> -		if ( sz & 0x01 )
>> -			sz += 1;
>> -		if ( sz & 0x02 )
>> -			sz += 2;
>> -		facts->FWImageSize = sz;
>> +		facts->FWImageSize = ALIGN(facts->FWImageSize, 4);
>>  
>>  		if (!facts->RequestFrameSize) {
>>  			/*  Something is wrong!  */
>> diff --git a/drivers/message/fusion/mptctl.c b/drivers/message/fusion/mptctl.c
>> index 8a050e8..1004392 100644
>> --- a/drivers/message/fusion/mptctl.c
>> +++ b/drivers/message/fusion/mptctl.c
>> @@ -1749,12 +1749,7 @@ mptctl_replace_fw (unsigned long arg)
>>  
>>  	/* Allocate memory for the new FW image
>>  	 */
>> -	newFwSize = karg.newImageSize;
>> -
>> -	if (newFwSize & 0x01)
>> -		newFwSize += 1;
>> -	if (newFwSize & 0x02)
>> -		newFwSize += 2;
>> +	newFwSize = ALIGN(karg.newImageSize, 4);
>>  
>>  	mpt_alloc_fw_memory(ioc, newFwSize);
>>  	if (ioc->cached_fw == NULL)
>
> ALIGN is certainly more readable to me.
>
> Reviewed-by: Joe Lawrence <joe.lawrence@...atus.com>
>
> -- Joe

Did anyone pick this up?

Thanks,
Rasmus
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