[PATCH] it913x: [BUG] fix correct endpoint size when pid filter on.

[Malcolm Priestley <tvboxspy@gmail.com>]

On Thu, 2012-11-08 at 22:18 +0200, Antti Palosaari wrote:
> On 11/08/2012 07:48 PM, Malcolm Priestley wrote:
> >
> > On 07/11/12 23:43, Antti Palosaari wrote:
> >> Malcolm,
> >> Have you newer tested it with USB1.1 port? Stream is totally broken.
> >>
> > Hi Antti
> >
> > Hmm, yes it is a bit choppy on dvb-usb-v2.
> >
> > I will have a look at it.
> 
> Fedora's stock 3.6.5-1.fc17.x86_64 is even more worse - no picture at 
> all when using vlc. Clearly visible difference is pid filter count. 
> dvb-usb says 5 filters whilst dvb-usb-v2 says 32 pid filters.
> 
> dvb_usb_v2: will use the device's hardware PID filter (table count: 32)
> dvb-usb: will use the device's hardware PID filter (table count: 5).
> 
> 
I kept the count as the hardware default with dvb-usb-v2, with 5, users
can still run in to trouble with Video PIDs.

I have traced it to an incorrect endpoint size when the PID filter
is enabled. It also affected USB 2.0 with the filter on.


Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
---
 drivers/media/usb/dvb-usb-v2/it913x.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/media/usb/dvb-usb-v2/it913x.c b/drivers/media/usb/dvb-usb-v2/it913x.c
index 695f910..29300e3 100644
--- a/drivers/media/usb/dvb-usb-v2/it913x.c
+++ b/drivers/media/usb/dvb-usb-v2/it913x.c
@@ -643,7 +643,8 @@ static int it913x_frontend_attach(struct dvb_usb_adapter *adap)
 	struct it913x_state *st = d->priv;
 	int ret = 0;
 	u8 adap_addr = I2C_BASE_ADDR + (adap->id << 5);
-	u16 ep_size = adap->stream.buf_size / 4;
+	u16 ep_size = (adap->pid_filtering) ? TS_BUFFER_SIZE_PID / 4 :
+		TS_BUFFER_SIZE_MAX / 4;
 	u8 pkt_size = 0x80;
 
 	if (d->udev->speed != USB_SPEED_HIGH)
-- 
1.7.10.4