[media] lgdt330x: fix behavior of read errors in lgdt330x_read_ucblocks

initialize *ucblocks to zero & fix the following build warning:

lgdt330x.c: In function "lgdt330x_read_ucblocks":
lgdt330x.c:288:6: warning: variable "err" set but not used
[-Wunused-but-set-variable]

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

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/lgdt330x.c b/drivers/media/dvb/frontends/lgdt330x.c
index 43971e63baa7..d45827158a24 100644
--- a/drivers/media/dvb/frontends/lgdt330x.c
+++ b/drivers/media/dvb/frontends/lgdt330x.c
@@ -288,6 +288,8 @@ static int lgdt330x_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
         int err;
         u8 buf[2];
 
+        *ucblocks = 0;
+
         switch (state->config->demod_chip) {
         case LGDT3302:
                 err = i2c_read_demod_bytes(state, LGDT3302_PACKET_ERR_COUNTER1,
@@ -302,6 +304,8 @@ static int lgdt330x_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
                        "Only LGDT3302 and LGDT3303 are supported chips.\n");
                 err = -ENODEV;
         }
+        if (err < 0)
+                return err;
 
         *ucblocks = (buf[0] << 8) | buf[1];
         return 0;