2.6.21-mm2: power_supply_core.c build failure

[Andreas Mohr <andi@rhlx01.hs-esslingen.de>]

Hi,

  CC      drivers/power/power_supply_core.o
In file included from drivers/power/power_supply_core.c:18:
include/linux/power_supply.h:125: error: field 'changed_work' has incomplete type
drivers/power/power_supply_core.c: In function 'power_supply_changed_work':
drivers/power/power_supply_core.c:25: warning: type defaults to 'int' in declaration of '__mptr'
drivers/power/power_supply_core.c:25: warning: initialization from incompatible pointer type
drivers/power/power_supply_core.c: In function 'power_supply_changed':
drivers/power/power_supply_core.c:57: warning: implicit declaration of function 'schedule_work'
drivers/power/power_supply_core.c: In function 'power_supply_register':
drivers/power/power_supply_core.c:103: warning: implicit declaration of function 'INIT_WORK'
drivers/power/power_supply_core.c: In function 'power_supply_unregister':
drivers/power/power_supply_core.c:128: warning: implicit declaration of function 'flush_scheduled_work'
make[3]: *** [drivers/power/power_supply_core.o] Error 1
make[2]: *** [drivers/power] Error 2
make[1]: *** [drivers] Error 2
make[1]: Leaving directory `/usr/src/linux-2.6.21-mm2.agp'
make: *** [debian/stamp-build-kernel] Error 2

CONFIG_POWER_SUPPLY=y
# CONFIG_POWER_SUPPLY_DEBUG is not set
# CONFIG_PDA_POWER is not set
# CONFIG_BATTERY_DS2760 is not set
# CONFIG_BATTERY_OLPC is not set

P3/700 UP, gcc 4.1.3.

Care to add a #include <linux/workqueue.h> or so? ;)
(worked for me when adding to include/linux/power_supply.h)

Ugh, such a pain following ever-outdated and always-broken -mm versions ;)

Andreas Mohr
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