From 8827bd88efcb7e5976585b9b35a551d7c56f8efb Mon Sep 17 00:00:00 2001 From: Leo Kim Date: Fri, 18 Mar 2016 21:23:16 +0900 Subject: [PATCH] staging: wilc1000: fixed kernel panic when firmware is not started This patch fixed the problems caused by if firmware is not started. That is why, in nl80211 put current TX power in interface info. If firmware is not started, this function(get_tx_power) does not work. Signed-off-by: Leo Kim Signed-off-by: Greg Kroah-Hartman --- drivers/staging/wilc1000/wilc_wfi_cfgoperations.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c b/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c index b76622d1adc3..448a5c8c4514 100644 --- a/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c +++ b/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c @@ -2170,6 +2170,13 @@ static int get_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev, int ret; struct wilc_priv *priv = wiphy_priv(wiphy); struct wilc_vif *vif = netdev_priv(priv->dev); + struct wilc *wl; + + wl = vif->wilc; + + /* If firmware is not started, return. */ + if (!wl->initialized) + return -EIO; ret = wilc_get_tx_power(vif, (u8 *)dbm); if (ret)