Hi,
Randy Dunlap wrote:
On Tue, 10 Nov 2009 11:18:13 +0100 Michael Trimarchi wrote:
Hi,
Michael Trimarchi wrote:
Hi all
I'm working on the ov538 bridge with the ov7690 camera connected.
Somentimes I receive
[ 1268.146705] gspca: ISOC data error: [110] len=1020, status=-71
[ 1270.946739] gspca: ISOC data error: [114] len=1020, status=-71
[ 1271.426689] gspca: ISOC data error: [82] len=1020, status=-71
[ 1273.314640] gspca: ISOC data error: [1] len=1020, status=-71
[ 1274.114661] gspca: ISOC data error: [17] len=1020, status=-71
[ 1274.658718] gspca: ISOC data error: [125] len=1020, status=-71
[ 1274.834666] gspca: ISOC data error: [21] len=1020, status=-71
[ 1275.666684] gspca: ISOC data error: [94] len=1020, status=-71
[ 1275.826645] gspca: ISOC data error: [40] len=1020, status=-71
[ 1276.226721] gspca: ISOC data error: [100] len=1020, status=-71
This error from the usb, how are they related to the camera?
-71 = -EPROTO (from include/asm-generic/errno.h).
-EPROTO in USB drivers means (from Documentation/usb/error-codes.txt):
-EPROTO (*, **) a) bitstuff error
b) no response packet received within the
prescribed bus turn-around time
c) unknown USB error
footnotes:
(*) Error codes like -EPROTO, -EILSEQ and -EOVERFLOW normally indicate
hardware problems such as bad devices (including firmware) or cables.
OK, but it's a failure of the ehci transaction on my laptop and seems that is
not so frequent. I think that can be a cable problem.
(**) This is also one of several codes that different kinds of host
controller use to indicate a transfer has failed because of device
disconnect. In the interval before the hub driver starts disconnect
processing, devices may receive such fault reports for every request.
Ok, this is not a big issue because I can use vlc to test the camera. But anybody
knows why camorama, camstream, cheese crash during test. is it driver depend? or not?
Could be driver. Easily could be a device problem too.
I think that it can be a vl2 vl1 problem. Because now I can manage in skype too using
the v4l1-compat library. Maybe my 2.6.32-rc5 is too new :(
Michael
---
~Randy
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