[media] af9035: check I/O errors on IR polling
Use more careful error checks.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/usb/dvb-usb-v2/af9035.c b/drivers/media/usb/dvb-usb-v2/af9035.c
index 735646d..5d6b371 100644
--- a/drivers/media/usb/dvb-usb-v2/af9035.c
+++ b/drivers/media/usb/dvb-usb-v2/af9035.c
@@ -100,6 +100,10 @@
/* check status */
if (state->buf[2]) {
+ /* fw returns status 1 when IR code was not received */
+ if (req->cmd == CMD_IR_GET || state->buf[2] == 1)
+ return 1;
+
dev_dbg(&d->udev->dev, "%s: command=%02x failed fw error=%d\n",
__func__, req->cmd, state->buf[2]);
ret = -EIO;
@@ -1223,7 +1227,9 @@
struct usb_req req = { CMD_IR_GET, 0, 0, NULL, 4, b };
ret = af9035_ctrl_msg(d, &req);
- if (ret < 0)
+ if (ret == 1)
+ return 0;
+ else if (ret < 0)
goto err;
if ((b[2] + b[3]) == 0xff) {
@@ -1240,9 +1246,12 @@
rc_keydown(d->rc_dev, key, 0);
-err:
- /* ignore errors */
return 0;
+
+err:
+ dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
+
+ return ret;
}
static int af9035_get_rc_config(struct dvb_usb_device *d, struct dvb_usb_rc *rc)