V4L/DVB (8000): tda827x: fix NULL pointer in tda827xa_lna_gain

Check that tda827x_config is defined before attempting to use it.

Signed-off-by: Sigmund Augdal <sigmund@snap.tv>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

diff --git a/drivers/media/common/tuners/tda827x.c b/drivers/media/common/tuners/tda827x.c
index d30d2c9..8555d9c 100644 (file)
--- a/drivers/media/common/tuners/tda827x.c
+++ b/drivers/media/common/tuners/tda827x.c
@@ -418,13 +418,13 @@ static void tda827xa_lna_gain(struct dvb_frontend *fe, int high,
        unsigned char buf[] = {0x22, 0x01};
        int arg;
        int gp_func;
-       struct i2c_msg msg = { .addr = priv->cfg->switch_addr, .flags = 0,
-                              .buf = buf, .len = sizeof(buf) };
+       struct i2c_msg msg = { .flags = 0, .buf = buf, .len = sizeof(buf) };
 
        if (NULL == priv->cfg) {
                dprintk("tda827x_config not defined, cannot set LNA gain!\n");
                return;
        }
+       msg.addr = priv->cfg->switch_addr;
        if (priv->cfg->config) {
                if (high)
                        dprintk("setting LNA to high gain\n");