heissan
attached patch adds a little delay before usb-control message sending to
avoid i2c timeouts (unwanted message log errors) seen many people.
Looks like gl861 usb-controller messes up and stops responding if i2c
messages are send too fast. This happens especially with faster
computers. First I tried to change usb_control_msg timeout from 2000 to
4000 but it didn't help.
This bug is mentioned (at least) following mails:
http://linuxtv.org/pipermail/linux-dvb/2007-February/015863.html
http://linuxtv.org/pipermail/linux-dvb/2007-January/015458.html
Jonas Larsson and gingis could you test and report if it works. If still
timeouts after the patch then try to add more delay [udelay(10)].
Signed-off-by: Antti Palosaari <crope@xxxxxx>
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diff -r 580ad59c8bb5 linux/drivers/media/dvb/dvb-usb/gl861.c
--- a/linux/drivers/media/dvb/dvb-usb/gl861.c Tue Feb 13 16:26:26 2007 -0500
+++ b/linux/drivers/media/dvb/dvb-usb/gl861.c Wed Feb 14 00:28:13 2007 +0200
@@ -44,6 +44,8 @@ static int gl861_i2c_msg(struct dvb_usb_
warn("wlen = %x, aborting.", wlen);
return -EINVAL;
}
+
+ udelay(10); /* avoid usb i2c timeouts */
return usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), req, type,
value, index, rbuf, rlen, 2000);
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