Nicolas Boichat schrieb: > Hello, > > Even the Mac OS X driver seems to do strange things to try to "unstuck" > the device. > > A proper way to fix the problem would be to fix the userspace > application to retry a few milliseconds later.
It will try again, but in the GNOME sensors applet you will see "ERROR"
for a fraction of a second.
And now we have a problem. I've contacted the author of the applet before
and he says it's an error in the kernel driver. You say, it's an error of
the program. What should we do?
I think, it's not really an error of the driver, but as any user-space tool
assume to get valid values every time, solve it in the kernel driver.
> There are 2 ways to fix the problem in kernel too:
> - Store the values, ok, but what should we return if it's the first
> time we read it? It would be relatively complicated, and would use some
> kernel memory.
If it failed the first time, return an error.
And yes, it will use some memory, but it must be only allocated once at init,
right?!
> - Wait and retry, but sometimes it can take a long time (I would say
> something like up to a second to get a value), and we don't want to
> block the application while it could do something better in the mean-time...
Did you currently try only once? Maybe we should try 3 times before giving up???
Regards
Sven
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