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mwifiex: return -EBUSY if scan request cannot be honored 

There are cases we cannot scan when request is received.
For example, during WPA group key negociation the scan request
will be blocked. We should return an error code to cfg80211
because cfg80211_scan_done will never be called.

Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Paul Stewart <pstew@chromium.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Bing Zhao 2012-10-05 20:21:40 -07:00 committed by John W. Linville
parent 55fabefe36
commit c247633531
2 changed files with 16 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/net/wireless/mwifiex/cfg80211.c
View File

@ -1802,7 +1802,7 @@ mwifiex_cfg80211_scan(struct wiphy *wiphy,
{
struct net_device *dev = request->wdev->netdev;
struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
int i, offset;
int i, offset, ret;
struct ieee80211_channel *chan;
struct ieee_types_header *ie;
@ -1855,8 +1855,12 @@ mwifiex_cfg80211_scan(struct wiphy *wiphy,
priv->user_scan_cfg->chan_list[i].scan_time = 0;
}
if (mwifiex_scan_networks(priv, priv->user_scan_cfg))
return -EFAULT;
ret = mwifiex_scan_networks(priv, priv->user_scan_cfg);
if (ret) {
dev_err(priv->adapter->dev, "scan failed: %d\n", ret);
return ret;
}
if (request->ie && request->ie_len) {
for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {

18
drivers/net/wireless/mwifiex/scan.c
View File

@ -1296,7 +1296,7 @@ mwifiex_radio_type_to_band(u8 radio_type)
int mwifiex_scan_networks(struct mwifiex_private *priv,
const struct mwifiex_user_scan_cfg *user_scan_in)
{
int ret = 0;
int ret;
struct mwifiex_adapter *adapter = priv->adapter;
struct cmd_ctrl_node *cmd_node;
union mwifiex_scan_cmd_config_tlv *scan_cfg_out;
@ -1309,20 +1309,20 @@ int mwifiex_scan_networks(struct mwifiex_private *priv,
unsigned long flags;
if (adapter->scan_processing) {
dev_dbg(adapter->dev, "cmd: Scan already in process...\n");
return ret;
dev_err(adapter->dev, "cmd: Scan already in process...\n");
return -EBUSY;
}
if (priv->scan_block) {
dev_err(adapter->dev,
"cmd: Scan is blocked during association...\n");
return -EBUSY;
}
spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
adapter->scan_processing = true;
spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
if (priv->scan_block) {
dev_dbg(adapter->dev,
"cmd: Scan is blocked during association...\n");
return ret;
}
scan_cfg_out = kzalloc(sizeof(union mwifiex_scan_cmd_config_tlv),
GFP_KERNEL);
if (!scan_cfg_out) {