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usb: dwc3: gadget: synchronize_irq dwc irq in suspend

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[ Upstream commit 01c10880d2 ]

We see dwc3 endpoint stopped by unwanted irq during
suspend resume test, which is caused dwc3 ep can't be started
with error "No Resource".

Here, add synchronize_irq before suspend to sync the
pending IRQ handlers complete.

Signed-off-by: Bo He <bo.he@intel.com>
Signed-off-by: Yu Wang <yu.y.wang@intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Bo He 2019-01-14 09:48:32 +02:00 committed by Greg Kroah-Hartman
parent f29024c0e9
commit 03a5d4d553
1 changed files with 2 additions and 0 deletions
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2
drivers/usb/dwc3/gadget.c
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@ -3274,6 +3274,8 @@ int dwc3_gadget_suspend(struct dwc3 *dwc)
dwc3_disconnect_gadget(dwc);
__dwc3_gadget_stop(dwc);
synchronize_irq(dwc->irq_gadget);
return 0;
}