[media] tda18271: properly report read errors in tda18271_get_id

Until now, if there is a read error in tda18271_get_id, the driver
reports "Unknown device..."  Instead, check the return value of
tda18271_read_regs and display the appropriate error message.

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

1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/media/tuners/tda18271-fe.c b/drivers/media/tuners/tda18271-fe.c
index ca202da9d4c9..72c26fd77922 100644
--- a/drivers/media/tuners/tda18271-fe.c
+++ b/drivers/media/tuners/tda18271-fe.c
@@ -1159,11 +1159,19 @@ static int tda18271_get_id(struct dvb_frontend *fe)
         struct tda18271_priv *priv = fe->tuner_priv;
         unsigned char *regs = priv->tda18271_regs;
         char *name;
+        int ret;
 
         mutex_lock(&priv->lock);
-        tda18271_read_regs(fe);
+        ret = tda18271_read_regs(fe);
         mutex_unlock(&priv->lock);
 
+        if (ret) {
+                tda_info("Error reading device ID @ %d-%04x, bailing out.\n",
+                         i2c_adapter_id(priv->i2c_props.adap),
+                         priv->i2c_props.addr);
+                return -EIO;
+        }
+
         switch (regs[R_ID] & 0x7f) {
         case 3:
                 name = "TDA18271HD/C1";