Commit 27c62c2d authored Sep 22, 2014 by Peter Chen Committed by Greg Kroah-Hartman Sep 23, 2014

usb: chipidea: otg initialization is only needed when the gadget is supported



We have only needed to enable otg initialization when both of
below conditions are satisfied:

- The controller is otg capable
- The gadget function is enabled

If the controller is otg capable, but is host-only configuration, we do
not need to access register otgsc and do any otg operations (eg, create
otg workqueue).

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent f40017e0

drivers/usb/chipidea/core.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -662,7 +662,7 @@ static int ci_hdrc_probe(struct platform_device *pdev)
		goto deinit_phy;
		}

		if (ci->is_otg) {
		if (ci->is_otg && ci->roles[CI_ROLE_GADGET]) {
		/* Disable and clear all OTG irq */
		hw_write_otgsc(ci, OTGSC_INT_EN_BITS \| OTGSC_INT_STATUS_BITS,
		OTGSC_INT_STATUS_BITS);