From: Peter Huewe Date: Thu, 14 Feb 2013 02:37:10 +0000 (+0100) Subject: staging/wlan-ng: Fix 'Branch condition evaluates to a garbage value' in p80211netdev.c X-Git-Tag: v3.9-rc1~127^2~46 X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=commitdiff_plain;h=fae7e4d39373305cf505d1f0871a4491897d56f9;hp=0bcc0429bdb9f7cca3b7ab1f905b0d47031c03e0 staging/wlan-ng: Fix 'Branch condition evaluates to a garbage value' in p80211netdev.c clang/scan-build complains that: p80211netdev.c:451:6: warning: Branch condition evaluates to a garbage value if ((p80211_wep.data) && (p80211_wep.data != skb->data)) ^~~~~~~~~~~~~~~~~ This can happen in p80211knetdev_hard_start_xmit if - if (wlandev->state != WLAN_DEVICE_OPEN) evaluates to true. the execution flow then continues at the 'failed' label where p80211_wep.data is used without being initialized first. -> Initialize the data field to NULL to fix this issue. Signed-off-by: Peter Huewe Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/wlan-ng/p80211netdev.c b/drivers/staging/wlan-ng/p80211netdev.c index 750330f064f9..0039e082507d 100644 --- a/drivers/staging/wlan-ng/p80211netdev.c +++ b/drivers/staging/wlan-ng/p80211netdev.c @@ -351,6 +351,8 @@ static int p80211knetdev_hard_start_xmit(struct sk_buff *skb, union p80211_hdr p80211_hdr; struct p80211_metawep p80211_wep; + p80211_wep.data = NULL; + if (skb == NULL) return NETDEV_TX_OK;