Heiner Kallweit kirjoitti 11.3.2021 klo 18.23:
On 11.03.2021 17:00, gmail wrote:
15. huhtik. 2020, 19.18, Heiner Kallweit <hkallwe...@gmail.com 
<mailto:hkallwe...@gmail.com>> kirjoitti:

    On 15.04.2020 16:39, Lauri Jakku wrote:

        Hi, There seems to he Something odd problem, maybe timing
        related. Stripped version not workingas expected. I get back to
        you, when  i have it working.

    There's no point in working on your patch. W/o proper justification it
    isn't acceptable anyway. And so far we still don't know which problem
    you actually have.
    FIRST please provide the requested logs and explain the actual problem
    (incl. the commit that caused the regression).


       13. huhtik. 2020, 14.46, Lauri Jakku <ljakk...@gmail.com
        <mailto:ljakk...@gmail.com>> kirjoitti: Hi, Fair enough, i'll
        strip them. -lja On 2020-04-13 14:34, Leon Romanovsky wrote: On
        Mon, Apr 13, 2020 at 02:02:01PM +0300, Lauri Jakku wrote: Hi,
        Comments inline. On 2020-04-13 13:58, Leon Romanovsky wrote: On
        Mon, Apr 13, 2020 at 01:30:13PM +0300, Lauri Jakku wrote: From
        2d41edd4e6455187094f3a13d58c46eeee35aa31 Mon Sep 17 00:00:00
        2001 From: Lauri Jakku <l...@iki.fi> Date: Mon, 13 Apr 2020
        13:18:35 +0300 Subject: [PATCH] NET: r8168/r8169 identifying fix
        The driver installation determination made properly by checking
        PHY vs DRIVER id's. ---
        drivers/net/ethernet/realtek/r8169_main.c | 70
        ++++++++++++++++++++--- drivers/net/phy/mdio_bus.c | 11 +++- 2
        files changed, 72 insertions(+), 9 deletions(-) I would say that
        most of the code is debug prints. I tought that they are helpful
        to keep, they are using the debug calls, so they are not visible
        if user does not like those. You are missing the point of who
        are your users. Users want to have working device and the code.
        They don't need or like to debug their kernel. Thanks

    Hi, now i got time to tackle with this again :) .. I know the proposed fix 
is quite hack, BUT it does give a clue what is wrong.

    Something in subsystem is not working at the first time, but it needs to be 
reloaded to work ok (second time). So what I will do
    is that I try out re-do the module load within the module, if there is 
known HW id available but driver is not available, that
    would be much nicer and user friendly way.


    When the module setup it self nicely on first load, then can be the hunt 
for late-init of subsystem be checked out. Is the HW
    not brought up correct way during first time, or does the HW need time to 
brough up, or what is the cause.

    The justification is the same as all HW driver bugs, the improvement is 
always better to take in. Or do this patch have some-
    thing what other patches do not?

    Is there legit reason why NOT to improve something, that is clearly issue 
for others also than just me ? I will take on the
    task to fiddle with the module to get it more-less hacky and fully working 
version. Without the need for user to do something
    for the module to work.

        --Lauri J.


I have no clue what you're trying to say. The last patch wasn't acceptable at 
all.
If you want to submit a patch:

- Follow kernel code style
- Explain what the exact problem is, what the root cause is, and how your patch 
fixes it
- Explain why you're sure that it doesn't break processing on other chip 
versions
   and systems.

Ok, i'll make nice patch that has in comment what is the problem and how does the patch help the case at hand.

I don't know the rootcause, but something in subsystem that possibly is initializing bit slowly, cause the reloading

of the module provides working network connection, when done via insmod cycle. I'm not sure is it just a timing

issue or what. I'd like to check where is the driver pointer populated, and put some debugs to see if the issue is just

timing, let's see.


The problem is that (1st load) fails, but there is valid HW found (the ID is known), when the hacky patch of mine

is applied, the second time of loading module works ok, and network is connected ok etc.


I make the change so that when the current HEAD code is going to return failure, i do check that if the HW id is read ok

from the HW, then pass -EAGAIN ja try to load 5 times, sleeping 250ms in between.


--Lauri J.




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