[media] dib0090: fix smatch error

Fix this smatch error:

dib0090.c:1124 dib0090_pwm_gain_reset() error: we previously assumed 'state->rf_ramp' could be null (see line 1086)

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/dvb-frontends/dib0090.c b/drivers/media/dvb-frontends/dib0090.c
index dc2d41e..d879dc0 100644 (file)
--- a/drivers/media/dvb-frontends/dib0090.c
+++ b/drivers/media/dvb-frontends/dib0090.c
@@ -1121,7 +1121,7 @@ void dib0090_pwm_gain_reset(struct dvb_frontend *fe)
                                (state->current_band == BAND_CBAND) ? "CBAND" : "NOT CBAND",
                                state->identity.version & 0x1f);
 
-               if (rf_ramp && ((state->rf_ramp[0] == 0) ||
+               if (rf_ramp && ((state->rf_ramp && state->rf_ramp[0] == 0) ||
                    (state->current_band == BAND_CBAND &&
                    (state->identity.version & 0x1f) <= P1D_E_F))) {
                        dprintk("DE-Engage mux for direct gain reg control");