linux-kernel - Re: [PATCH v2] staging: octeon: Fix checkpatch warnings

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Date:	Thu, 27 Nov 2014 08:34:00 -0800
From:	Joe Perches <joe@...ches.com>
To:	Luis de Bethencourt <luis@...ethencourt.com>
Cc:	linux-kernel@...r.kernel.org, gregkh@...uxfoundation.org,
	paul.gortmaker@...driver.com, eunb.song@...sung.com,
	aaro.koskinen@....fi, devel@...verdev.osuosl.org
Subject: Re: [PATCH v2] staging: octeon: Fix checkpatch warnings

On Thu, 2014-11-27 at 17:18 +0100, Luis de Bethencourt wrote:
> Fixing 80 character limit warnings in octeon/ethernet-rx.c

Hello again Luis.

Another thing you might consider is to  align
multiple line statements to the appropriate
open parenthesis.

> diff --git a/drivers/staging/octeon/ethernet-rx.c b/drivers/staging/octeon/ethernet-rx.c
[]
> @@ -126,13 +127,15 @@ static inline int cvm_oct_check_rcv_error(cvmx_wqe_t *work)
>  
>  			if (*ptr == 0xd5) {
>  				/*
> -				  printk_ratelimited("Port %d received 0xd5 preamble\n", work->ipprt);
> +				  printk_ratelimited("Port %d received 0xd5 preamble\n",
> +					  work->ipprt);
>  				 */

This is in a commented out block, but this
would look better like:

		printk_ratelimited("format",
				   args...);


> @@ -212,17 +215,20 @@ static int cvm_oct_napi_poll(struct napi_struct *napi, int budget)
>  		did_work_request = 0;
>  		if (work == NULL) {
>  			union cvmx_pow_wq_int wq_int;
> +
>  			wq_int.u64 = 0;
>  			wq_int.s.iq_dis = 1 << pow_receive_group;
>  			wq_int.s.wq_int = 1 << pow_receive_group;
>  			cvmx_write_csr(CVMX_POW_WQ_INT, wq_int.u64);
>  			break;
>  		}
> -		pskb = (struct sk_buff **)(cvm_oct_get_buffer_ptr(work->packet_ptr) - sizeof(void *));
> +		pskb = (struct sk_buff **)(cvm_oct_get_buffer_ptr(work->packet_ptr) -
> +			sizeof(void *));

cvm_oct_get_buffer_ptr returns a void pointer
so it doesn't need a cast.

a possible fix is just to remove the cast

		pskb = cvm_oct_get_buffer_ptr(work->packet_ptr) - sizeof(void *);

>  		prefetch(pskb);

If the cast type above to a ** is to be believed,
maybe this should be prefetch(*pskb)

If you do these, they should be separate patches.

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