Drivers that do not use the get_btc_status() callback may not define a
dummy routine. The caller needs to check before making the call.

Signed-off-by: Larry Finger <[email protected]>
Cc: Murilo Opsfelder Araujo <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Thadeu Cascardo <[email protected]>
---

John,

This missing statement is causing kernel crashes for several of the drivers.
This patch should be applied ASAP.

Larry
---

 drivers/net/wireless/rtlwifi/pci.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/rtlwifi/pci.c 
b/drivers/net/wireless/rtlwifi/pci.c
index 667aba8..25daa87 100644
--- a/drivers/net/wireless/rtlwifi/pci.c
+++ b/drivers/net/wireless/rtlwifi/pci.c
@@ -1796,7 +1796,8 @@ static int rtl_pci_start(struct ieee80211_hw *hw)
        rtl_pci_reset_trx_ring(hw);
 
        rtlpci->driver_is_goingto_unload = false;
-       if (rtlpriv->cfg->ops->get_btc_status()) {
+       if (rtlpriv->cfg->ops->get_btc_status &&
+           rtlpriv->cfg->ops->get_btc_status()) {
                rtlpriv->btcoexist.btc_ops->btc_init_variables(rtlpriv);
                rtlpriv->btcoexist.btc_ops->btc_init_hal_vars(rtlpriv);
        }
-- 
1.8.4.5

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