[lm-sensors] [PATCH V2] hwmon: add driver for ADT7411 voltage & temperature sensor

Jean Delvare khali at linux-fr.org
Sat Feb 6 15:53:25 CET 2010

On Sat, 6 Feb 2010 15:38:08 +0100, Wolfram Sang wrote:
> > You can have reading vdd from sysfs also update the cache, but then you
> > should also read data->ref_is_vdd at the same time. If the user is
> > going to always read all the values at once then this is the most
> > efficient approach.
> Yup. Just if not, then we will have another useless read (reading adc_ref_vdd
> when we always want to know vdd) as on embedded boards, sysfs is often used
> directly. Also, I can't factor out the caching-routine, as show_input() needs
> vdd only if adc_ref_vdd is set. Adding a force_flag for always reading vdd to a
> factored out function seems a bit too complex for that case to me. I think I'll
> leave it at the current state: show_input() does the caching, show_vdd() always
> reads from the chip. We might end up reading vdd twice within a second. Well,
> it shouldn't hurt that much.

Sure, fine with me.

> (...)
> Have a nice weekend!

Thank you, same to you!

Jean Delvare

More information about the lm-sensors mailing list