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pda_power: Fix ac_draw usage before it being set 

When I reboot my iPAQ hx4700 in its cradle, the battery will not begin
to charge even though the AC supply is connected. Charging will start
only after the PDA power driver is tickled by some other power event,
such as reseating the iPAQ in its cradle or connecting the USB cable.

The problem lies in pda_power_probe(), where ac_draw is used by the call
to update_charger() before being set by the call to regulator_get().

Moving the regulator_get() call to before the update_charger() call
fixes the problem.

Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
This commit is contained in:
Paul Parsons 2012-09-20 14:26:05 -07:00 committed by Anton Vorontsov
parent 2815b786c3
commit ec60ea5cd6
1 changed files with 9 additions and 7 deletions
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16
drivers/power/pda_power.c
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@ -281,6 +281,14 @@ static int pda_power_probe(struct platform_device *pdev)
goto init_failed;
}
ac_draw = regulator_get(dev, "ac_draw");
if (IS_ERR(ac_draw)) {
dev_dbg(dev, "couldn't get ac_draw regulator\n");
ac_draw = NULL;
ret = PTR_ERR(ac_draw);
goto ac_draw_failed;
}
update_status();
update_charger();
@ -309,13 +317,6 @@ static int pda_power_probe(struct platform_device *pdev)
pda_psy_usb.num_supplicants = pdata->num_supplicants;
}
ac_draw = regulator_get(dev, "ac_draw");
if (IS_ERR(ac_draw)) {
dev_dbg(dev, "couldn't get ac_draw regulator\n");
ac_draw = NULL;
ret = PTR_ERR(ac_draw);
}
#ifdef CONFIG_USB_OTG_UTILS
transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
if (!IS_ERR_OR_NULL(transceiver)) {
@ -415,6 +416,7 @@ ac_supply_failed:
regulator_put(ac_draw);
ac_draw = NULL;
}
ac_draw_failed:
if (pdata->exit)
pdata->exit(dev);
init_failed: