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DM USB: add some preparing time for xHCI emulation before resuming.

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If the USB kernel drives and devices of SOS are not available and
functional ready after UOS is resumed from frozen state, the comming
USB command from UOS will cause a disaster because the DM has no
resourse to to emulation.

This patch add a dynamic time span (could change according to number
of native USB devices attached) to give USB drivers and devices of
SOS an opportunity to be ready.

Tracked-On: #1893
Signed-off-by: Xiaoguang Wu <xiaoguang.wu@intel.com>
Reviewed-by: Liang Yang <liang3.yang@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
This commit is contained in:
Xiaoguang Wu
2018-11-20 17:08:32 +08:00
committed by wenlingz
parent b159d66fb3
commit 9d4b5d7e1b
3 changed files with 23 additions and 0 deletions
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2
devicemodel/include/xhci.h
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@@ -377,4 +377,6 @@ struct xhci_event_ring_seg {
volatile uint32_t dwEvrsReserved;
};
void wait_for_xhci_resume();
#endif /* _XHCI_H_ */