Re: [ 026/105] ACPI: EC: Make the GPE storm threshold a moduleparameter

From: Jonathan Nieder
Date: Sun Oct 28 2012 - 20:04:40 EST


Ben Hutchings wrote:

> 3.2-stable review patch. If anyone has any objections, please let me know.
[...]
> commit a520d52e99b14ba7db135e916348f12f2a6e09be upstream.
>
> The Linux EC driver includes a mechanism to detect GPE storms,
> and switch from interrupt-mode to polling mode. However, polling
> mode sometimes doesn't work, so the workaround is problematic.
> Also, different systems seem to need the threshold for detecting
> the GPE storm at different levels.

Not an objection, but this is a weird parameter. How many false
interrupts per transaction should be expected? Is there some fact
about the hardware or firmware that makes this a well defined number
on each machine?

Thanks,
Jonathan
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