systemd clarification

Andrew Jeffery andrew at
Mon Oct 26 14:49:31 AEDT 2020

On Thu, 27 Aug 2020, at 01:25, Mike Jones wrote:
> Matt,
> Cool, I will have a look.
> I also found there is i2cset -f.
> I need to find out if it is atomic wrt hwmon. If it is, I could use 
> PAGE_PLUS to get around hwmon mucking with PAGE. Not as general purpose 
> though, and some of our devices don’t support PAGE_PLUS

Bit of a late reply, however: Both the chardev and in-kernel paths acquire the 
same bus mutex, so you won't have transfers stomping on each-other if you 
constrain yourself to a single read/write command through the chardev interface.


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