[staging-next V3] ozwpan: fix memcmp() test in oz_set_active_pd()
Julia Lawall
julia.lawall at lip6.fr
Sun Aug 19 16:56:41 UTC 2012
There seems also to be an opportunity in drivers/scsi/qla2xxx/qla_init.c:
memcmp(icb->enode_mac, "\0\0\0\0\0\0", sizeof(icb->enode_mac))
julia
On Sun, 19 Aug 2012, Tomas Winkler wrote:
> "addr" is a pointer so it's either 4 or 8 bytes, but actually we want
> to compare 6 bytes (ETH_ALEN).
>
> As network stack already provides helper function
> is_zero_ether_addr() we use that instead of memcmp
>
> Signed-off-by: Tomas Winkler <tomas.winkler at intel.com>
> Cc: Dan Carpenter <dan.carpenter at oracle.com>
> Cc: Rupesh Gujare <rgujare at ozmodevices.com>
> ---
> V1: by Dan Carpenter <dan.carpenter at oracle.com>
> V2: replace memcmp with is_zero_ether_addr
> V3: include <linux/etherdevice.h>
>
> drivers/staging/ozwpan/ozcdev.c | 3 ++-
> 1 files changed, 2 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/staging/ozwpan/ozcdev.c b/drivers/staging/ozwpan/ozcdev.c
> index d983219..758ce0a 100644
> --- a/drivers/staging/ozwpan/ozcdev.c
> +++ b/drivers/staging/ozwpan/ozcdev.c
> @@ -8,6 +8,7 @@
> #include <linux/cdev.h>
> #include <linux/uaccess.h>
> #include <linux/netdevice.h>
> +#include <linux/etherdevice.h>
> #include <linux/poll.h>
> #include <linux/sched.h>
> #include "ozconfig.h"
> @@ -213,7 +214,7 @@ static int oz_set_active_pd(u8 *addr)
> if (old_pd)
> oz_pd_put(old_pd);
> } else {
> - if (!memcmp(addr, "\0\0\0\0\0\0", sizeof(addr))) {
> + if (is_zero_ether_addr(addr)) {
> spin_lock_bh(&g_cdev.lock);
> pd = g_cdev.active_pd;
> g_cdev.active_pd = 0;
> --
> 1.7.4.4
>
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