On Thu, Jun 03, 2010 at 01:06:48PM -0700, Daniel Walker wrote: > On Thu, 2010-06-03 at 20:57 +0100, Russell King wrote: > > config MACH_HALIBUT > > bool "Halibut Board (QCT SURF7201A)" > > select I2C if STD_CONFIG > > select I2C_WHATEVER if STD_CONFIG > > ... > > > > That means if you enable STD_CONFIG, you'll get everything that's required > > selected. If you then disable STD_CONFIG, I believe Kconfig leaves > > everything that was selected as still being selected. > > I just did a little test, and it doesn't. Kconfig would un-select all > the drivers, at least from my test. That's because it knows what the original state of the symbol is. Yes, that's a little undesirable for our behaviour - but it can be worked around - by saving and restarting Kconfig. Try this: config STD_CONFIG bool "Standard config" default y config DRIVER_A tristate "Driver A" config ARM def_bool y select DRIVER_A if STD_CONFIG and in a new directory /path/to/kernel/scripts/kconfig/mconf test.conf If you turn off STD_CONFIG immediately, it'll turn off DRIVER_A. However, save out the config, and re-run mconf test.conf. You'll then find that DRIVER_A remains set even when STD_CONFIG is turned off. So, Kconfig does have the behaviour we desire but it's not directly accessible. Is it worth persuing? Will Linus accept this STD_CONFIG idea or did his lack of reply to it indicate that he's not something he's willing to entertain? In any case, this is my last mail on the subject. I won't be replying to mail for at least the next four days. -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
