2003-07-21 11:06:17

by MånsRullgård

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Subject: AX8817x (USB ethernet) problem in 2.6.0-test1


My Netgear FA120 USB2 ethernet adaptor isn't working properly with
Linux 2.6.0-test1. First off, I had to modify it slightly (patch
below) to make it work at all with USB2. Now I can send data at the
full expected speed (~11 MB/s). The problem is that receiving is only
200 kb/s. This is obviously annoying. For the record, it works
perfectly with 2.4.21-pre5 and ax8817x.c version 0.9.7. Any ideas?


Index: drivers/usb/net/ax8817x.c
===================================================================
RCS file: /home/cvs/linux-2.5/drivers/usb/net/ax8817x.c,v
retrieving revision 1.2
diff -u -r1.2 ax8817x.c
--- drivers/usb/net/ax8817x.c 21 Jun 2003 16:20:14 -0000 1.2
+++ drivers/usb/net/ax8817x.c 21 Jul 2003 09:42:58 -0000
@@ -1238,7 +1238,7 @@

usb_fill_int_urb(ax_info->int_urb, usb, usb_rcvintpipe(usb, 1),
ax_info->int_buf, 8, ax_int_callback, ax_info,
- 100);
+ usb->speed == USB_SPEED_HIGH? 8: 100);

ret = usb_submit_urb(ax_info->int_urb, GFP_ATOMIC);
if (ret < 0) {


--
M?ns Rullg?rd
[email protected]


2003-07-30 17:57:08

by Greg KH

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Subject: Re: AX8817x (USB ethernet) problem in 2.6.0-test1

On Mon, Jul 21, 2003 at 01:21:08PM +0200, M?ns Rullg?rd wrote:
>
> My Netgear FA120 USB2 ethernet adaptor isn't working properly with
> Linux 2.6.0-test1. First off, I had to modify it slightly (patch
> below) to make it work at all with USB2.

Applied, thanks.

greg k-h

2003-07-31 08:51:03

by MånsRullgård

[permalink] [raw]
Subject: Re: AX8817x (USB ethernet) problem in 2.6.0-test1

Greg KH <[email protected]> writes:

>> My Netgear FA120 USB2 ethernet adaptor isn't working properly with
>> Linux 2.6.0-test1. First off, I had to modify it slightly (patch
>> below) to make it work at all with USB2.
>
> Applied, thanks.

Has anyone looked into what might be causing the terrible receive
performance I'm seeing? The module author, Dave Hollis, had some
ideas, but I don't know where he's been lately. Are you there, Dave?

Are there more values with different meanings for USB2 devices?

--
M?ns Rullg?rd
[email protected]