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staging: wilc1000: fixed kernel panic when firmware is not started

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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 <leo.kim@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Leo Kim 2016-03-18 21:23:16 +09:00 committed by Greg Kroah-Hartman
parent bd3a3cd6c2
commit 8827bd88ef
1 changed files with 7 additions and 0 deletions
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7
drivers/staging/wilc1000/wilc_wfi_cfgoperations.c
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@ -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)