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0d4ed4e27a
On Mon, Apr 02, 2012 at 01:53:23PM +1000, Benjamin Herrenschmidt wrote: > > drivers/built-in.o: In function `.nouveau_pm_trigger': > > (.text+0xa56e8): undefined reference to `.power_supply_is_system_supplied' > > > > nouveau probably needs to depends on CONFIG_POWER_SUPPLY to force a module > > build with the latter is =m > > Ok, not that trivial... > > The problem is more like POWER_SUPPLY should be a bool, not a tristate. > > If you think about it: you don't want things like nouveau to depend on a > random subsystem like that, people will never get it. In fact, > POWER_SUPPLY provides empty inline stubs when not enabled, so that's > really designed to not have depends... > > However that -cannot- work if POWER_SUPPLY is modular and the drivers > who use it are not. > > The only fixes here that make sense I can think of > that don't also involve Kconfig horrors are: > > - Ugly: in power_supply.h, use the extern variant if > > defined(CONFIG_POWER_SUPPLY) || > (defined(CONFIG_POWER_SUPPLY_MODULE) && defined(MODULE)) > > IE. use the stub if power supply is a module and what is being built is > built-in. Of course that's not only ugly, it somewhat sucks from a user > perspective as the subsystem now exists but can't be used by some > drivers... > > - Better: Just make the bloody thing a bool :-) The power supply > framework itself is small enough, just make it a boolean option and > avoid the problem entirely. The actual power supply sub drivers can > remain modular of course. Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com> |
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| .. | ||
| ab8500_btemp.c | ||
| ab8500_charger.c | ||
| ab8500_fg.c | ||
| abx500_chargalg.c | ||
| apm_power.c | ||
| bq27x00_battery.c | ||
| charger-manager.c | ||
| collie_battery.c | ||
| da9030_battery.c | ||
| da9052-battery.c | ||
| ds2760_battery.c | ||
| ds2780_battery.c | ||
| ds2781_battery.c | ||
| ds2782_battery.c | ||
| gpio-charger.c | ||
| intel_mid_battery.c | ||
| isp1704_charger.c | ||
| jz4740-battery.c | ||
| Kconfig | ||
| lp8727_charger.c | ||
| Makefile | ||
| max8903_charger.c | ||
| max8925_power.c | ||
| max8997_charger.c | ||
| max8998_charger.c | ||
| max17040_battery.c | ||
| max17042_battery.c | ||
| olpc_battery.c | ||
| pcf50633-charger.c | ||
| pda_power.c | ||
| pmu_battery.c | ||
| power_supply.h | ||
| power_supply_core.c | ||
| power_supply_leds.c | ||
| power_supply_sysfs.c | ||
| s3c_adc_battery.c | ||
| sbs-battery.c | ||
| smb347-charger.c | ||
| test_power.c | ||
| tosa_battery.c | ||
| twl4030_charger.c | ||
| wm97xx_battery.c | ||
| wm831x_backup.c | ||
| wm831x_power.c | ||
| wm8350_power.c | ||
| z2_battery.c | ||