On 06/27/2014 11:55 PM, Stephen Warren wrote:
On 06/27/2014 03:37 PM, Jörg Krause wrote:
I added the last series of patches beginning from 2014-06-10 for testing
purposes. The patches from 2014-05-29 were already applied.
First series of patches:
Applying: usb: ci_udc: call udc_disconnect() from ci_pullup()
Applying: usb: ci_udc: fix freeing of ep0 req
Applying: usb: ci_udc: fix probe error cleanup
Applying: usb: ci_udc: clean up all allocations in unregister
Calling tftp the first time after a reset runs fine,
I thought the issue you reported was that the *first* time you run the
"tftp" command, it has issues such as timeouts? Did I misunderstand, or
did that issue somehow go away?
That's right! This was the state before applying a series of patches
after allow multiple buffer allocs per ep. Now, the first run of tftp
runs without any errors.
[snip]
Yes, that is certainly expected to solve issues with *multiple*
invocations of "tftp" or similar commands and ethernet over ci_udc. The
first hunk in that patch fixes something I probably introduced during
one of my ci_udc patches (probably the one that you originally replied
to "usb: ci_udc: allow multiple buffer allocs per ep"), but the second
hunk fixes a problem that I /think/ has always been there. Did multiple
invocations of "tftp" using ci_udc as the network device ever work for
you before, without random crashes or memory leaks?
Yes, it did. If I can remember right it stopped working after a series
of patches from 2014-04-24. But I am not sure.
But there is still a problem:
I have to wait some seconds before I can run a second time tftp. This is
the output from U-Boot:
=> run update_rootfs
Updating rootfs ...
using ci_udc, OUT ep- IN ep- STATUS ep-
high speed config #1: 2 mA, Ethernet Gadget, using CDC Ethernet
USB network up!
Using usb_ether device
[snip]
=> run update_rootfs
Updating rootfs ...
using ci_udc, OUT ep- IN ep- STATUS ep-
high speed config #1: 2 mA, Ethernet Gadget, using CDC Ethernet
ERROR: The remote end did not respond in time.
at drivers/usb/gadget/ether.c:2388/usb_eth_init()
Wait some seconds ...
=> run update_rootfs
Updating rootfs ...
using ci_udc, OUT ep- IN ep- STATUS ep-
high speed config #1: 2 mA, Ethernet Gadget, using CDC Ethernet
USB network up!
Using usb_ether device
[snip]
Hmm. That's odd. I didn't notice that, but I'll try retesting sometime.
What exactly does $update_rootfs contain? It might be useful to know
some details of your network topology (e.g. is the TFTP server on the
machine that the USB cable is plugged into or further away, and are the
machine and network lightly loaded) and rough sizes of the files you're
downloading.
This is what update_rootfs is doing:
"update_rootfs=echo Updating rootfs ...; " \
"if tftp ${rootfs_file}; then " \
"mtdparts default; " \
"nand erase.part rootfs; " \
"ubi part rootfs; " \
"ubi create rootfs; " \
"ubi write ${loadaddr} rootfs ${filesize}; " \
"fi; " \
"\0" \
Filesize of rootfs.ubifs is about 13 MB.
The tftp server (tftp-hpa 5.2-4) is running on my notebook (running Arch
Linux), where the device is plugged via USB cable. Ethernet is not used,
but wireless network, which is used "normal" I would say.
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