linux-kernel - Re: [PATCH] drivers:staging:gdm72xx Fix line over 80 characters

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Date:	Sat, 31 Oct 2015 18:14:16 +0100
From:	Bogicevic Sasa <brutallesale@...il.com>
To:	Joe Perches <joe@...ches.com>
Cc:	gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drivers:staging:gdm72xx Fix line over 80 characters

On 10/31, Joe Perches wrote:
>On Sat, 2015-10-31 at 17:38 +0100, Bogicevic Sasa wrote:
>> This fixes line over 80 character messages from checkpatch.pl
>[]
>> diff --git a/drivers/staging/gdm72xx/gdm_qos.c b/drivers/staging/gdm72xx/gdm_qos.c
>[]
>> @@ -382,7 +382,7 @@ void gdm_recv_qos_hci_packet(void *nic_ptr, u8 *buf, int size)
>>
>>  		spin_lock_irqsave(&qcb->qos_lock, flags);
>>  		qcb->csr[index].sfid = sfid;
>> -		qcb->csr[index].classifier_rule_en = ((buf[pos++] << 8) & 0xff00);
>> +		qcb->csr[index].classifier_rule_en = (buf[pos++] << 8) & 0xff00;
>>  		qcb->csr[index].classifier_rule_en += buf[pos++];
>>  		if (qcb->csr[index].classifier_rule_en == 0)
>>  			qcb->qos_null_idx = index;
>
>If you do this one, please do all of them in the
>same block.
>
>		qcb->csr[index].srcport_lo = ((buf[pos++]<<8)&0xff00);
>		qcb->csr[index].srcport_lo += buf[pos++];
>		qcb->csr[index].srcport_hi = ((buf[pos++]<<8)&0xff00);
>		qcb->csr[index].srcport_hi += buf[pos++];
>		qcb->csr[index].dstport_lo = ((buf[pos++]<<8)&0xff00);
>		qcb->csr[index].dstport_lo += buf[pos++];
>		qcb->csr[index].dstport_hi = ((buf[pos++]<<8)&0xff00);
>
>It'd probably be nicer to use a temporary for
>qcb->csr[index] too.
>
>Also, the += is kind of odd.  These are really a
>le16_to_cpu conversion, so it might be nicer to use
>that mechanism.
>
>	csr->srcport_lo = get_unaligned_le16(&buf[pos]);
>	pos += 2;
>
>
It is not a problem to remove unnecesarry brackets but bear in mind I am
new to bitwise stuff. So how it should be, like this?

		qcb->csr[index].srcport_lo = get_unaligned_le16(&buf[pos]);
		pos += 2;
		qcb->csr[index].srcport_lo = buf[pos];
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