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usb: dwc3: gadget: Fix suspend/resume during device mode

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commit 9772b47a4c2916d645c551228b6085ea24acbe5d upstream.

Gadget controller might not be always active during system
suspend/resume as gadget driver might not have yet been loaded or
might have been unloaded prior to system suspend.

Check if we're active and only then perform
necessary actions during suspend/resume.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Roger Quadros 2016-04-12 11:33:29 +03:00 committed by prashantpaddune
parent 31cd51be9e
commit 87426dc14b
1 changed files with 6 additions and 0 deletions
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6
drivers/usb/dwc3/gadget.c
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@ -3443,6 +3443,9 @@ void dwc3_gadget_exit(struct dwc3 *dwc)
int dwc3_gadget_suspend(struct dwc3 *dwc)
{
if (!dwc->gadget_driver)
return 0;
if (dwc->pullups_connected) {
dwc3_gadget_disable_irq(dwc);
dwc3_gadget_run_stop(dwc, true, true);
@ -3461,6 +3464,9 @@ int dwc3_gadget_resume(struct dwc3 *dwc)
struct dwc3_ep *dep;
int ret;
if (!dwc->gadget_driver)
return 0;
/* Start with SuperSpeed Default */
dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512);