[PATCH 2/3] media: dib0700: cleanup start/stop streaming logic

From: Mauro Carvalho Chehab
Date: Sun Sep 26 2021 - 16:51:41 EST


Having two different pathes to start/stop streaming, depending
weather the USB endpoints are 0x82/0x83 or not makes it more
prune to errors.

Unify the logic.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
---
drivers/media/usb/dvb-usb/dib0700_core.c | 26 +++++++++++++-----------
1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/drivers/media/usb/dvb-usb/dib0700_core.c b/drivers/media/usb/dvb-usb/dib0700_core.c
index 7ea8f68b0f45..d7c5836b9271 100644
--- a/drivers/media/usb/dvb-usb/dib0700_core.c
+++ b/drivers/media/usb/dvb-usb/dib0700_core.c
@@ -583,7 +583,7 @@ int dib0700_download_firmware(struct usb_device *udev, const struct firmware *fw
int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
{
struct dib0700_state *st = adap->dev->priv;
- int ret;
+ int ret, adapt_nr;

if ((onoff != 0) && (st->fw_version >= 0x10201)) {
/* for firmware later than 1.20.1,
@@ -610,24 +610,26 @@ int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)

st->buf[3] = 0x00;

- deb_info("modifying (%d) streaming state for %d\n", onoff, adap->id);
-
st->channel_state &= ~0x3;
+
if ((adap->fe_adap[0].stream.props.endpoint != 2)
- && (adap->fe_adap[0].stream.props.endpoint != 3)) {
- deb_info("the endpoint number (%i) is not correct, use the adapter id instead", adap->fe_adap[0].stream.props.endpoint);
- if (onoff)
- st->channel_state |= 1 << (adap->id);
+ && (adap->fe_adap[0].stream.props.endpoint != 3)) {
+ deb_info("the endpoint number (%i) is not correct, use the adapter id instead\n",
+ adap->fe_adap[0].stream.props.endpoint);
+ adapt_nr = adap->id;
} else {
- if (onoff)
- st->channel_state |= 1 << (adap->fe_adap[0].stream.props.endpoint-2);
- else
- st->channel_state |= 1 << (3-adap->fe_adap[0].stream.props.endpoint);
+ adapt_nr = adap->fe_adap[0].stream.props.endpoint - 2;
}

+ if (onoff)
+ st->channel_state |= 1 << adapt_nr;
+ else
+ st->channel_state |= 1 << (1 - adapt_nr);
+
st->buf[2] |= st->channel_state;

- deb_info("data for streaming: %x %x\n", st->buf[1], st->buf[2]);
+ deb_info("adapter %d, streaming %s: %*ph\n",
+ adapt_nr, onoff ? "ON" : "OFF", 3, st->buf);

ret = dib0700_ctrl_wr(adap->dev, st->buf, 4);
mutex_unlock(&adap->dev->usb_mutex);
--
2.31.1