V4L/DVB (7843): tda18271: fix error handling in tda18271c1_rf_tracking_filter_calibration

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/media/common/tuners/tda18271-fe.c b/drivers/media/common/tuners/tda18271-fe.c
index 8b44d4c62bfe..13d651c987a3 100644
--- a/drivers/media/common/tuners/tda18271-fe.c
+++ b/drivers/media/common/tuners/tda18271-fe.c
@@ -665,6 +665,7 @@ static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe,
 {
         struct tda18271_priv *priv = fe->tuner_priv;
         unsigned char *regs = priv->tda18271_regs;
+        int ret;
         u32 N = 0;
 
         /* calculate bp filter */
@@ -713,7 +714,10 @@ static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe,
 
         tda18271_calc_main_pll(fe, N);
 
-        tda18271_write_regs(fe, R_EP3, 11);
+        ret = tda18271_write_regs(fe, R_EP3, 11);
+        if (ret < 0)
+                return ret;
+
         msleep(5); /* RF tracking filter calibration initialization */
 
         /* search for K,M,CO for RF calibration */