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From: "Kok, Auke" <auke-jan.h.kok@intel.com>
To: Roel Kluin <12o3l@tiscali.nl>
Cc: "Kok, Auke" <auke-jan.h.kok@intel.com>,
	lkml <linux-kernel@vger.kernel.org>,
	e1000-devel@lists.sourceforge.net
Subject: Re: [PATCH] net/e1000: fix memcpy  in e1000_get_strings
Date: Thu, 29 Nov 2007 08:28:47 -0800	[thread overview]
Message-ID: <474EE8BF.3080107@intel.com> (raw)
In-Reply-To: <474E1BC3.807@tiscali.nl>

Roel Kluin wrote:
> drivers/net/e1000/e1000_ethtool.c:113:
> #define E1000_TEST_LEN sizeof(e1000_gstrings_test) / ETH_GSTRING_LEN
> 
> drivers/net/e1000e/ethtool.c:106:
> #define E1000_TEST_LEN sizeof(e1000_gstrings_test) / ETH_GSTRING_LEN
> 
> E1000_TEST_LEN*ETH_GSTRING_LEN will expand to 
> sizeof(e1000_gstrings_test) / (ETH_GSTRING_LEN * ETH_GSTRING_LEN)
> 
> Please confirm that the change is as wanted.


Thanks,

I'll take a look at this closely and post these to netdev-2.6.

thanks

Auke


> --
> A lack of parentheses around defines causes unexpected results due to operator
> precedences.
> 
> Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
> ---
> diff --git a/drivers/net/e1000/e1000_ethtool.c b/drivers/net/e1000/e1000_ethtool.c
> index 667f18b..b83ccce 100644
> --- a/drivers/net/e1000/e1000_ethtool.c
> +++ b/drivers/net/e1000/e1000_ethtool.c
> @@ -1923,7 +1923,7 @@ e1000_get_strings(struct net_device *netdev, uint32_t stringset, uint8_t *data)
>  	switch (stringset) {
>  	case ETH_SS_TEST:
>  		memcpy(data, *e1000_gstrings_test,
> -			E1000_TEST_LEN*ETH_GSTRING_LEN);
> +			sizeof(e1000_gstrings_test));
>  		break;
>  	case ETH_SS_STATS:
>  		for (i = 0; i < E1000_GLOBAL_STATS_LEN; i++) {
> diff --git a/drivers/net/e1000e/ethtool.c b/drivers/net/e1000e/ethtool.c
> index 6a39784..338c49d 100644
> --- a/drivers/net/e1000e/ethtool.c
> +++ b/drivers/net/e1000e/ethtool.c
> @@ -1739,7 +1739,7 @@ static void e1000_get_strings(struct net_device *netdev, u32 stringset,
>  	switch (stringset) {
>  	case ETH_SS_TEST:
>  		memcpy(data, *e1000_gstrings_test,
> -			E1000_TEST_LEN*ETH_GSTRING_LEN);
> +				sizeof(e1000_gstrings_test));
>  		break;
>  	case ETH_SS_STATS:
>  		for (i = 0; i < E1000_GLOBAL_STATS_LEN; i++) {
> -
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  reply	other threads:[~2007-11-29 16:29 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-11-29  1:54 Roel Kluin
2007-11-29 16:28 ` Kok, Auke [this message]
2007-12-05 19:23 ` Kok, Auke

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