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nl80211: remove some stack variables in trigger_scan and start_sched_scan

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Some stack variables (name *ssid and *channel) are only used to define
the size of the memory block that needs to be allocated for the
request structure in the nl80211_trigger_scan() and
nl80211_start_sched_scan() functions.

This is unnecessary because the sizes of the actual elements in the
structure can be used instead.

Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Luciano Coelho 2011-05-18 11:42:03 +03:00 committed by John W. Linville
parent d676ff493d
commit a2cd43c52a
1 changed files with 4 additions and 8 deletions
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12
net/wireless/nl80211.c
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@ -3294,8 +3294,6 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct cfg80211_scan_request *request;
struct cfg80211_ssid *ssid;
struct ieee80211_channel *channel;
struct nlattr *attr;
struct wiphy *wiphy;
int err, tmp, n_ssids = 0, n_channels, i;
@ -3342,8 +3340,8 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
return -EINVAL;
request = kzalloc(sizeof(*request)
+ sizeof(*ssid) * n_ssids
+ sizeof(channel) * n_channels
+ sizeof(*request->ssids) * n_ssids
+ sizeof(*request->channels) * n_channels
+ ie_len, GFP_KERNEL);
if (!request)
return -ENOMEM;
@ -3449,8 +3447,6 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
struct cfg80211_sched_scan_request *request;
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct cfg80211_ssid *ssid;
struct ieee80211_channel *channel;
struct nlattr *attr;
struct wiphy *wiphy;
int err, tmp, n_ssids = 0, n_channels, i;
@ -3507,8 +3503,8 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
return -EINVAL;
request = kzalloc(sizeof(*request)
+ sizeof(*ssid) * n_ssids
+ sizeof(channel) * n_channels
+ sizeof(*request->ssids) * n_ssids
+ sizeof(*request->channels) * n_channels
+ ie_len, GFP_KERNEL);
if (!request)
return -ENOMEM;