Hi, This is third revision of the patch. The previous version can be found here: http://lwn.net/Articles/566234/ It was pointed out that the previous solution was not good for the existing devices for several reasons: - The I2C adapter is powered on before client ->probe() is called. This causes problems with some devices. - The I2C adapter is kept powered on if any of its children are active. However, for ACPI enumerated devices we need to have parent child relationship so that the runtime PM core can power on the adapter device if any of its children become active. In this version we still enable runtime PM for the I2C adapter device but only for devices that are enumerated from ACPI. The existing drivers should continue to work as they do today. I combined patches [1/9] and [2/9] from the previous version and added checks for ACPI_HANDLE(). I hope Aaron and Lv are OK with this. I didn't include changes to the SPI bus (the $subject is changed again to reflect that) because we don't need to change the existing drivers anymore. If this approach is accepted we can do the same for the SPI bus as well. Mika Westerberg (1): i2c: enable runtime PM for I2C adapter devices enumerated from ACPI drivers/i2c/i2c-core.c | 47 ++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 46 insertions(+), 1 deletion(-) -- 1.8.4.rc3 -- 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
