Re: [PATCH v4] extcon: Palmas Extcon Driver

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Hi,

On Tuesday 07 May 2013 01:28 PM, Mark Brown wrote:
On Tue, May 07, 2013 at 10:42:53AM +0530, Kishon Vijay Abraham I wrote:
On Monday 06 May 2013 08:10 PM, Mark Brown wrote:
On Mon, May 06, 2013 at 06:47:04PM +0530, Kishon Vijay Abraham I wrote:

+		if (palmas_usb->linkstat != PALMAS_USB_STATE_VBUS) {
+			if (palmas_usb->vbus_reg) {
+				ret = regulator_enable(palmas_usb->vbus_reg);
+				if (ret) {
+					dev_dbg(palmas_usb->dev,
+						"regulator enable failed\n");
+					goto ret0;

This is very bad karma, why is the regulator optional?

The platform can provide it's own vbus control in which case this is
not needed.

So why is there no interaction with this external VBUS control and how
does the driver distinguish between that and an error getting the
regulator?

The platform specifies if it provides its own VBUS control by the dt property ti,no_control_vbus. So the driver will give an error only when *ti,no_control_vbus* is not set. Graeme?

Thanks
Kishon
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