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[media] af9035: check I/O errors on IR polling

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Use more careful error checks.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Antti Palosaari 2013-03-08 17:39:12 -03:00 committed by Mauro Carvalho Chehab
parent 3bf5e55299
commit 1bfd5294dd
1 changed files with 12 additions and 3 deletions
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15
drivers/media/usb/dvb-usb-v2/af9035.c
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@ -100,6 +100,10 @@ static int af9035_ctrl_msg(struct dvb_usb_device *d, struct usb_req *req)
/* 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 @@ static int af9035_rc_query(struct dvb_usb_device *d)
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 @@ static int af9035_rc_query(struct dvb_usb_device *d)
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)