Hi,
Thinh Nguyen Thinh.Nguyen@synopsys.com writes:
The START_TRANSFER command needs to be executed while in ON/U0 link state (with an exception during register initialization). Don't use dwc->link_state to check this since the driver only tracks the link state when the link state change interrupt is enabled. Check the link state from DSTS register instead.
Note that often the host already brings the device out of low power before it sends/requests the next transfer. So, the user won't see any issue when the device starts transfer then. This issue is more noticeable in cases when the device delays starting transfer, which can happen during delayed control status after the host put the device in low power.
Cc: stable@vger.kernel.org Fixes: 799e9dc82968 ("usb: dwc3: gadget: conditionally disable Link State change events") Signed-off-by: Thinh Nguyen Thinh.Nguyen@synopsys.com
Acked-by: Felipe Balbi balbi@kernel.org