Commit 5d2fb074 authored by Thinh Nguyen's avatar Thinh Nguyen Committed by Greg Kroah-Hartman
Browse files

usb: dwc3: ep0: Don't clear ep0 DWC3_EP_TRANSFER_STARTED 



The driver cannot issue the End Transfer command to the SETUP transfer.
Don't clear DWC3_EP_TRANSFER_STARTED flag to make sure that the driver
won't send Start Transfer command again, which can cause no-resource
error. For example this can occur if the host issues a reset to the
device.

Cc: stable@vger.kernel.org
Fixes: 76cb323f ("usb: dwc3: ep0: clear all EP0 flags")
Signed-off-by: default avatarThinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/d3d618185fd614bb7426352a9fc1199641d3b5f5.1731545781.git.Thinh.Nguyen@synopsys.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 51cdd69d

drivers/usb/dwc3/ep0.c

+1 −1
Original line number Diff line number Diff line
@@ -232,7 +232,7 @@ void dwc3_ep0_stall_and_restart(struct dwc3 *dwc) 
	/* stall is always issued on EP0 */

	dep = dwc->eps[0];

	__dwc3_gadget_ep_set_halt(dep, 1, false);

	dep->flags &= DWC3_EP_RESOURCE_ALLOCATED;

	dep->flags &= DWC3_EP_RESOURCE_ALLOCATED | DWC3_EP_TRANSFER_STARTED;

	dep->flags |= DWC3_EP_ENABLED;

	dwc->delayed_status = false;