From: Thinh Nguyen Date: Thu, 14 Nov 2024 01:02:06 +0000 (+0000) Subject: usb: dwc3: ep0: Don't clear ep0 DWC3_EP_TRANSFER_STARTED X-Git-Tag: v6.11.11~66 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ad551e4735fafee123dee83319244648540e1b0d;p=thirdparty%2Fkernel%2Fstable.git usb: dwc3: ep0: Don't clear ep0 DWC3_EP_TRANSFER_STARTED commit 5d2fb074dea289c41f5aaf2c3f68286bee370634 upstream. 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: 76cb323f80ac ("usb: dwc3: ep0: clear all EP0 flags") Signed-off-by: Thinh Nguyen Link: https://lore.kernel.org/r/d3d618185fd614bb7426352a9fc1199641d3b5f5.1731545781.git.Thinh.Nguyen@synopsys.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index c9533a99e47c8..874497f86499b 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -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;