| 123456789101112131415161718192021222324252627282930 |
- From 3332d0fc788ad59620b58e0da94f734b337775ce Mon Sep 17 00:00:00 2001
- From: Jonathan Bell <[email protected]>
- Date: Fri, 10 Mar 2023 14:21:42 +0000
- Subject: [PATCH 0163/1085] usb: xhci: drop and add the endpoint context in
- xhci_fixup_endpoint()
- Setting both the Drop and Add bits on the input context prevents the
- corruption of split transactions seen with the BCM2711 XHCI controller,
- which is a dwc3 variant.
- This is a downstream feature that allows usbhid to restrict polling
- intervals on mice and keyboards, and was only tested on a VL805 which
- didn't complain about the fact the endpoint got added twice.
- Signed-off-by: Jonathan Bell <[email protected]>
- ---
- drivers/usb/host/xhci.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
- --- a/drivers/usb/host/xhci.c
- +++ b/drivers/usb/host/xhci.c
- @@ -1587,7 +1587,7 @@ static void xhci_fixup_endpoint(struct u
- return;
- }
- ctrl_ctx->add_flags = xhci_get_endpoint_flag_from_index(ep_index);
- - ctrl_ctx->drop_flags = 0;
- + ctrl_ctx->drop_flags = ctrl_ctx->add_flags;
-
- spin_unlock_irqrestore(&xhci->lock, flags);
-
|
