diff mbox

[2/2] tda18271: properly report read errors in tda18271_get_id

Message ID 1349193426-13313-2-git-send-email-mkrufky@linuxtv.org (mailing list archive)
State New, archived
Headers show

Commit Message

Michael Ira Krufky Oct. 2, 2012, 3:57 p.m. UTC 
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>
---
 drivers/media/tuners/tda18271-fe.c |   10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)
diff mbox

Patch

diff --git a/drivers/media/tuners/tda18271-fe.c b/drivers/media/tuners/tda18271-fe.c
index ca202da..72c26fd 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";