bq27x00: Fix I2C dependency in KConfig

This patch fixes build failure(randconfig) of next-20130501. When config
I2C as m, BATTERY_BQ27x00 as y, here comes the failure. The driver depends
on I2C only if I2C is not disabled, as Lars commented. Last version of
this patch make the driver depend on I2C unconditionally.

Failure message:
drivers/built-in.o: In function `bq27x00_read_i2c':
bq27x00_battery.c:(.text+0x1082a7): undefined reference to `i2c_transfer'
drivers/built-in.o: In function `bq27x00_battery_init':
bq27x00_battery.c:(.init.text+0x6085): undefined reference to `i2c_register_driver'
bq27x00_battery.c:(.init.text+0x60c7): undefined reference to `i2c_del_driver'
drivers/built-in.o: In function `bq27x00_battery_exit':
bq27x00_battery.c:(.exit.text+0xbf0): undefined reference to `i2c_del_driver'
make: *** [vmlinux] Error 1

Signed-off-by: Xiong Zhou <jencce.kernel@gmail.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>

diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index 814bcb9..674e633 100644 (file)
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -152,6 +152,7 @@ config BATTERY_SBS
 
 config BATTERY_BQ27x00
        tristate "BQ27x00 battery driver"
+       depends on I2C || I2C=n
        help
          Say Y here to enable support for batteries with BQ27x00 (I2C/HDQ) chips.