linux-kernel - Re: [PATCH 1/1 v2] netdev: octeon_mgmt: ISO C90 forbids mixed declarations and code

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Date:	Mon, 15 Sep 2014 09:16:42 -0700
From:	David Daney <ddaney.cavm@...il.com>
To:	Heinrich Schuchardt <xypron.glpk@....de>
CC:	David Daney <david.daney@...ium.com>,
	"David S. Miller" <davem@...emloft.net>,
	Luka Perkov <luka@...nwrt.org>,
	Willem de Bruijn <willemb@...gle.com>,
	Russell King <rmk+kernel@....linux.org.uk>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Joe Perches <joe@...ches.com>
Subject: Re: [PATCH 1/1 v2] netdev: octeon_mgmt: ISO C90 forbids mixed declarations
 and code

On 09/13/2014 10:02 PM, Heinrich Schuchardt wrote:
> Revised patch takes into account comments by Joe and David.
>
> Compiling with OCTEON_MGMT_ETHERNET gives a warning
> drivers/net/ethernet/octeon/octeon_mgmt.c:295:4:
> warning: ISO C90 forbids mixed declarations and code
> [-Wdeclaration-after-statement]
>
> The patch cleans up the code.
>
> Signed-off-by: Heinrich Schuchardt <xypron.glpk@....de>
> CC: Joe Perches <joe@...ches.com>
> CC: David S. Miller <davem@...emloft.net>
> ---
>   drivers/net/ethernet/octeon/octeon_mgmt.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/octeon/octeon_mgmt.c b/drivers/net/ethernet/octeon/octeon_mgmt.c
> index 979c698..6cc68b1 100644
> --- a/drivers/net/ethernet/octeon/octeon_mgmt.c
> +++ b/drivers/net/ethernet/octeon/octeon_mgmt.c
> @@ -290,9 +290,10 @@ static void octeon_mgmt_clean_tx_buffers(struct octeon_mgmt *p)
>   		/* Read the hardware TX timestamp if one was recorded */
>   		if (unlikely(re.s.tstamp)) {
>   			struct skb_shared_hwtstamps ts;
> +			u64 ns;
>   			memset(&ts, 0, sizeof(ts));

I don't think this is the change suggested by Joe Perches and davem.

So NAK.  In the interestes of Bike Shedding, I will send a patch that 
clears the warning with a fewer number of changed lines, that follows 
the suggestion.

David Daney


>   			/* Read the timestamp */
> -			u64 ns = cvmx_read_csr(CVMX_MIXX_TSTAMP(p->port));
> +			ns = cvmx_read_csr(CVMX_MIXX_TSTAMP(p->port));
>   			/* Remove the timestamp from the FIFO */
>   			cvmx_write_csr(CVMX_MIXX_TSCTL(p->port), 0);
>   			/* Tell the kernel about the timestamp */
>

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