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35 lines
1.2 KiB
Diff
35 lines
1.2 KiB
Diff
From 36619da03ee2062d8af81f272392ce935e980e79 Mon Sep 17 00:00:00 2001
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From: Jonathan Bell <jonathan@raspberrypi.com>
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Date: Fri, 10 Mar 2023 14:21:42 +0000
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Subject: [PATCH 707/726] usb: xhci: drop and add the endpoint context in
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xhci_fixup_endpoint()
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Setting both the Drop and Add bits on the input context prevents the
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corruption of split transactions seen with the BCM2711 XHCI controller,
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which is a dwc3 variant.
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This is a downstream feature that allows usbhid to restrict polling
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intervals on mice and keyboards, and was only tested on a VL805 which
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didn't complain about the fact the endpoint got added twice.
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Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
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---
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drivers/usb/host/xhci.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
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index 3e7ca9058df3..b9f51c3c97c5 100644
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--- a/drivers/usb/host/xhci.c
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+++ b/drivers/usb/host/xhci.c
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@@ -1726,7 +1726,7 @@ static void xhci_fixup_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
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return;
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}
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ctrl_ctx->add_flags = xhci_get_endpoint_flag_from_index(ep_index);
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- ctrl_ctx->drop_flags = 0;
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+ ctrl_ctx->drop_flags = ctrl_ctx->add_flags;
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spin_unlock_irqrestore(&xhci->lock, flags);
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--
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2.33.1
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