The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-4.19.y git checkout FETCH_HEAD git cherry-pick -x 5d2fb074dea289c41f5aaf2c3f68286bee370634 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2024120325-spookily-agreeably-b1e4@gregkh' --subject-prefix 'PATCH 4.19.y' HEAD^..
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 5d2fb074dea289c41f5aaf2c3f68286bee370634 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Thinh.Nguyen@synopsys.com Date: Thu, 14 Nov 2024 01:02:06 +0000 Subject: [PATCH] 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: 76cb323f80ac ("usb: dwc3: ep0: clear all EP0 flags") Signed-off-by: Thinh Nguyen Thinh.Nguyen@synopsys.com Link: https://lore.kernel.org/r/d3d618185fd614bb7426352a9fc1199641d3b5f5.173154578... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index f3d97ad5156e..666ac432f52d 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;