On 14 March 2016 at 17:20, Giuseppe CAVALLARO [off-list ref] wrote:

Hi Tomeu

On 3/14/2016 12:43 PM, Tomeu Vizoso wrote:

quoted

Hi Peppe,

with that patch I don't see any difference at all in my setup.

So to be clear, with these commits on top of next-20160314, I still
get the hang during boot:

209afef6f0cd ARM: dts: rockchip: Add mdio node to ethernet node
2315acc6cf7f Revert "stmmac: first frame prep at the end of xmit routine"
b5e08e810c63 stmmac: fix tx prepare for normal desc
37c15a31d850 i2c: immediately mark ourselves as registered
4342eec3c5a2 Add linux-next specific files for 20160314

[   27.521026] WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:303
dev_watchdog+0x284/0x288
[   27.529460] NETDEV WATCHDOG: eth0 (rk_gmac-dwmac): transmit queue 0
timed out

I do not reproduce the WATCHDOG but i am continuing to look at the code
to understand if normal descriptor management is ok or not. I keep you
informed.

Just an info, did you test with 2315acc6cf7f included? Just to
understand if it is introducing a problem. It works in case of
enhanced descriptors are used instead of.

quoted

https://git.collabora.com/cgit/user/tomeu/linux.git/log/?h=broken-eth-on-rock2

thx I will take a look at this

Thanks.

Btw, I have rebased on top of 4.5 this morning and I have noticed that
88f8b1bb41c6 ("stmmac: Fix 'eth0: No PHY found' regression") got in
there, so I guess we have now a bunch of boards with broken network on
that release :(

Regards,

Tomeu

Regards
Peppe