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

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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>
This commit is contained in:
Peter Chen 2014-09-22 08:14:16 +08:00 committed by Greg Kroah-Hartman
parent f40017e0f3
commit 27c62c2da1
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/chipidea/core.c
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@ -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);