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gianfar: Fix overflow check and return value for gfar_get_cls_all() 

This function may currently fill one entry beyond the end of the
array it is given.  It also doesn't return an error code in case
it does detect overflow.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ben Hutchings 2011-09-06 12:44:25 +00:00 committed by David S. Miller
parent 22e83a2926
commit 710778ff87
1 changed files with 4 additions and 4 deletions
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4
drivers/net/gianfar_ethtool.c
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@ -1669,11 +1669,11 @@ static int gfar_get_cls_all(struct gfar_private *priv,
u32 i = 0; u32 i = 0;
list_for_each_entry(comp, &priv->rx_list.list, list) { list_for_each_entry(comp, &priv->rx_list.list, list) {
if (i <= cmd->rule_cnt) { if (i == cmd->rule_cnt)
return -EMSGSIZE;
rule_locs[i] = comp->fs.location; rule_locs[i] = comp->fs.location;
i++; i++;
} }
}
cmd->data = MAX_FILER_IDX; cmd->data = MAX_FILER_IDX;