Messages in this thread | | | Date | Thu, 19 Mar 2015 10:43:14 -0700 | From | Guenter Roeck <> | Subject | Re: [PATCH] eeprom: at24: Add support for large EEPROMs connected to SMBus adapters |
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On Thu, Mar 19, 2015 at 09:16:21AM +0100, Wolfram Sang wrote: > > > I don't call that multi-master, though, so I guess we may have a bit of a > > terminology problem. > > This is definately not a multi-master issue, I agree. It is just > another issue I saw when thinking about your patch thoroughly again. > > > I'll see what I can come up with, but I am not sure if I'll find the time > > before the 4.1 commit window opens. Company has a working solution (kind of), > > so now I'll have to do this on my own time ;-). > > But their solution is buggy and needs a fix! :) > Turns out this is really easy to reproduce. One process reads the eeprom over and over again, another runs i2cdump in a loop, and voila ... lots of corruptions. Scary, especially considering how wide-spread this kind of i2c access is in the kernel.
Guenter
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