Hi! > > Actually for the acpi stuff... we might wrap ACPI interpretter with a > > semaphore that needs to be taken before starting any AML code. Then > > just make sure sensors take same semaphore? > > I like the idea, it should work as long as we are guaranteed that all > the hwmon device accesses happen in the AML code? I'm not familiar with > ACPI, so you tell me. > > In practice it's rather the SMBus drivers which will need to take the > lock, as this is what the AML code will access (for SMBus-based > hardware monitoring drivers.) For non-SMBus based hardware monitoring > drivers, indeed the driver itself should take it. We will have to pay > attention to deadlocks on systems with multiple hardware monitoring > chips and/or SMBus channels. > > Can you please provide a patch implementing your proposal in acpi? Then > I could implement the i2c/hwmon part on some selected drivers and start > testing real world scenarii. I'm sorry, but I do not have time for a patch.... and I'm not really acpi expert, anyway. Ask Len? -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
