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usb: gadget: aspeed: Check suspend/resume callback existence

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.. before calling them

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Benjamin Herrenschmidt 2019-07-26 15:05:34 +10:00 committed by Felipe Balbi
parent ef9d34686b
commit 155940a16d
1 changed files with 2 additions and 2 deletions
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4
drivers/usb/gadget/udc/aspeed-vhub/dev.c
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@ -458,7 +458,7 @@ static const struct usb_gadget_ops ast_vhub_udc_ops = {
void ast_vhub_dev_suspend(struct ast_vhub_dev *d)
{
d->suspended = true;
if (d->driver) {
if (d->driver && d->driver->suspend) {
spin_unlock(&d->vhub->lock);
d->driver->suspend(&d->gadget);
spin_lock(&d->vhub->lock);
@ -468,7 +468,7 @@ void ast_vhub_dev_suspend(struct ast_vhub_dev *d)
void ast_vhub_dev_resume(struct ast_vhub_dev *d)
{
d->suspended = false;
if (d->driver) {
if (d->driver && d->driver->resume) {
spin_unlock(&d->vhub->lock);
d->driver->resume(&d->gadget);
spin_lock(&d->vhub->lock);