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

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commit 9772b47a4c 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 Greg Kroah-Hartman
parent f2427238c9
commit df2ca32715
1 changed files with 6 additions and 0 deletions
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6
drivers/usb/dwc3/gadget.c
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@@ -2894,6 +2894,9 @@ 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);
@@ -2912,6 +2915,9 @@ 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);