On Tue, Oct 19, 2010 at 07:17:11PM -0700, rklein@nvidia.com wrote:
quoted text
> From: Rhyland Klein <rklein@nvidia.com>
> 
> Initial checkin adding basic support for the TI BQ24617 battery charger on the
> Nvidia Tegra architecture.

Why is this driver dependant on the CPU?  I can't see anything in the
code that makes it so.

quoted text
> +	if (old_status != -1 &&
> +		old_status != new_status) {
> +		dev_dbg(&chip->pdev->dev,
> +			"%s: %i -> %i\n", __func__, old_status,
> +			new_status);
> +		kobject_uevent(&chip->power_supply.dev->kobj, KOBJ_CHANGE);

power_supply_changed().

quoted text
> +static irqreturn_t bq24617_irq_switch(int irq, void *devid)
> +{
> +	struct bq24617_info *chip = devid;
> +
> +	schedule_work(&chip->ac_work);
> +
> +	return IRQ_HANDLED;
> +}

You're looking for a threaded IRQ handler here - use
request_threaded_irq() with no primary handler.
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