netdev - Re: [PATCH net v3] net: dsa: mv88e6xxx: Wait for EEPROM done before HW reset

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Wed, 16 Aug 2023 20:18:16 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Alfred Lee <l00g33k@...il.com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, andrew@...n.ch,
 olteanv@...il.com, davem@...emloft.net, edumazet@...gle.com,
 pabeni@...hat.com, sgarzare@...hat.com, AVKrasnov@...rdevices.ru
Subject: Re: [PATCH net v3] net: dsa: mv88e6xxx: Wait for EEPROM done before
 HW reset

On Mon, 14 Aug 2023 17:13:23 -0700 Alfred Lee wrote:
> If the switch is reset during active EEPROM transactions, as in
> just after an SoC reset after power up, the I2C bus transaction
> may be cut short leaving the EEPROM internal I2C state machine
> in the wrong state.  When the switch is reset again, the bad
> state machine state may result in data being read from the wrong
> memory location causing the switch to enter unexpected mode
> rendering it inoperational.

I'll apply this instead of the v4:

https://lore.kernel.org/all/20230815220453.32035-1-l00g33k@gmail.com/

since you dropped Andrew's tag :( Please make sure you keep the tags
you were given.