If no platform data at all is supplied the driver crashes,
extend the checks to be more careful so we can compile in the
driver and boot also without platform data present.
Acked-by: NArun Murthy <arun.murthy@stericsson.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NAnton Vorontsov <anton.vorontsov@linaro.org>

The patch fixes the following sparse warning:

drivers/power/ab8500_charger.c:1619:6: warning: symbol 'ab8500_charger_detect_usb_type_work' was not declared. Should it be static?
drivers/power/abx500_chargalg.c:1709:24: warning: symbol 'abx500_chargalg_sysfs_ops' was not declared. Should it be static?
drivers/power/ab8500_fg.c:2328:24: warning: symbol 'ab8500_fg_sysfs_ops' was not declared. Should it be static?
Signed-off-by: NAnton Vorontsov <anton.vorontsov@linaro.org>

This patch fixes the following build errors:

ab8500_charger.c: In function 'ab8500_charger_remove':
ab8500_charger.c:2519:2: error: implicit declaration of function 'otg_unregister_notifier' [-Werror=implicit-function-declaration]
ab8500_charger.c:2520:2: error: implicit declaration of function 'otg_put_transceiver' [-Werror=implicit-function-declaration]
ab8500_charger.c: In function 'ab8500_charger_probe':
ab8500_charger.c:2688:2: error: implicit declaration of function 'otg_get_transceiver' [-Werror=implicit-function-declaration]
ab8500_charger.c:2688:10: warning: assignment makes pointer from integer without a cast [enabled by default]
ab8500_charger.c:2695:2: error: implicit declaration of function 'otg_register_notifier' [-Werror=implicit-function-declaration]
Signed-off-by: NAnton Vorontsov <anton.vorontsov@linaro.org>

This driver is responsible for detecting the ac/usb plugin and also includes
function to enable ac/usb charging and re-kick the watchdog.
It registers with the power supply class and provides information to the user
space. The information include status of ac/usb charger device.
This information in turn will be used by the abx500 charging algorithm driver
to enable/disable and monitor charging.
Signed-off-by: NArun Murthy <arun.murthy@stericsson.com>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NAnton Vorontsov <anton.vorontsov@linaro.org>