From f2e0eee4703869dc5edb5302a919861566ca7797 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Tue, 16 Apr 2024 01:23:07 +0000 Subject: usb: dwc3: ep0: Don't reset resource alloc flag The DWC3_EP_RESOURCE_ALLOCATED flag ensures that the resource of an endpoint is only assigned once. Unless the endpoint is reset, don't clear this flag. Otherwise we may set endpoint resource again, which prevents the driver from initiate transfer after handling a STALL or endpoint halt to the control endpoint. Cc: stable@vger.kernel.org Fixes: b311048c174d ("usb: dwc3: gadget: Rewrite endpoint allocation flow") Signed-off-by: Thinh Nguyen Link: https://lore.kernel.org/r/00122b7cc5be06abef461776e7cc9f5ebc8bc1cb.1713229786.git.Thinh.Nguyen@synopsys.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/ep0.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 72bb722da2f25..d96ffbe520397 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -226,7 +226,8 @@ void dwc3_ep0_stall_and_restart(struct dwc3 *dwc) /* reinitialize physical ep1 */ dep = dwc->eps[1]; - dep->flags = DWC3_EP_ENABLED; + dep->flags &= DWC3_EP_RESOURCE_ALLOCATED; + dep->flags |= DWC3_EP_ENABLED; /* stall is always issued on EP0 */ dep = dwc->eps[0]; -- cgit 1.2.3-korg