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authorAmitkumar Karwar <akarwar@marvell.com>2013-05-17 17:50:20 -0700
committerJohn W. Linville <linville@tuxdriver.com>2013-05-22 15:08:49 -0400
commit75ab753d7704f0bd34e09d5e4081bc73fdddd775 (patch)
tree834f7906f5eff6acfc31568d3930b87e3487798b /drivers/net/wireless/mwifiex/main.c
parent06041118ef0908b9cae7657a7b734699bcf61a6c (diff)
mwifiex: remove global user_scan_cfg variable
As the variable is used only for preparation of internal scan commands, we don't need to keep it allocated until the entire scan completes. We will define it as a local variable and free immediately after it's use. New flag 'scan_aborting' is added to handle race between mwifiex_close() and scan handler. Previously user_scan_cfg pointer used to take care of this. This patch fixes a memory leak in mwifiex_cfg80211_scan after running "iwlist mlan0 scan & sleep 1; rmmod mwifiex_sdio". Reported-by: Daniel Drake <dsd@laptop.org> Tested-by: Daniel Drake <dsd@laptop.org> Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/mwifiex/main.c')
-rw-r--r--drivers/net/wireless/mwifiex/main.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/wireless/mwifiex/main.c b/drivers/net/wireless/mwifiex/main.c
index 121443a0f2a..eb851861862 100644
--- a/drivers/net/wireless/mwifiex/main.c
+++ b/drivers/net/wireless/mwifiex/main.c
@@ -436,6 +436,7 @@ mwifiex_close(struct net_device *dev)
dev_dbg(priv->adapter->dev, "aborting scan on ndo_stop\n");
cfg80211_scan_done(priv->scan_request, 1);
priv->scan_request = NULL;
+ priv->scan_aborting = true;
}
return 0;