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Date:   Thu, 16 May 2019 22:33:15 +0000
From:   "Nikunj Kela (nkela)" <nkela@...co.com>
To:     Florian Fainelli <f.fainelli@...il.com>,
        "jeffrey.t.kirsher@...el.com" <jeffrey.t.kirsher@...el.com>
CC:     "xe-linux-external(mailer list)" <xe-linux-external@...co.com>,
        "David S. Miller" <davem@...emloft.net>,
        "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] igb: add parameter to ignore nvm checksum validation



On 5/16/19, 3:02 PM, "Florian Fainelli" <f.fainelli@...il.com> wrote:

    On 5/16/19 12:55 PM, Nikunj Kela (nkela) wrote:
    >> 
    >> 
    >> On 5/16/19, 12:35 PM, "Jeff Kirsher" <jeffrey.t.kirsher@...el.com> wrote:
    >> 
    >>     On Wed, 2019-05-08 at 23:14 +0000, Nikunj Kela wrote:
    >>    >> Some of the broken NICs don't have EEPROM programmed correctly. It
    >>    >> results
    >>    >> in probe to fail. This change adds a module parameter that can be
    >>    >> used to
    >>    >> ignore nvm checksum validation.
    >>    >> 
    >>    >> Cc: xe-linux-external@...co.com
    >>    >> Signed-off-by: Nikunj Kela <nkela@...co.com>
    >>    >> ---
    >>    >>  drivers/net/ethernet/intel/igb/igb_main.c | 28
    >>    >> ++++++++++++++++++++++------
    >>    >>  1 file changed, 22 insertions(+), 6 deletions(-)
    >>     
    >>     >NAK for two reasons.  First, module parameters are not desirable
    >>     >because their individual to one driver and a global solution should be
    >>     >found so that all networking device drivers can use the solution.  This
    >>     >will keep the interface to change/setup/modify networking drivers
    >>     >consistent for all drivers.
    >> 
    >>     
    >>     >Second and more importantly, if your NIC is broken, fix it.  Do not try
    >>     >and create a software workaround so that you can continue to use a
    >>     >broken NIC.  There are methods/tools available to properly reprogram
    >>     >the EEPROM on a NIC, which is the right solution for your issue.
    >> 
    >> I am proposing this as a debug parameter. Obviously, we need to fix EEPROM but this helps us continuing the development while manufacturing fixes NIC.
    
    >Then why even bother with sending this upstream?
    >-- 
    >Florian

My colleagues wanted me to upstream so if there is anyone else in the same situations, maybe there is a better solution. 
    

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