git: e276d2815031 - main - xhci(4): Only drop BULK and INTERRUPT endpoints to reset data toggle.

The branch main has been updated by hselasky:

URL: https://cgit.FreeBSD.org/src/commit/?id=e276d281503160ba3648bd394cde95736ee53329

commit e276d281503160ba3648bd394cde95736ee53329
Author:     Hans Petter Selasky <hselasky@FreeBSD.org>
AuthorDate: 2022-05-03 16:09:17 +0000
Commit:     Hans Petter Selasky <hselasky@FreeBSD.org>
CommitDate: 2022-05-03 16:13:53 +0000

    xhci(4): Only drop BULK and INTERRUPT endpoints to reset data toggle.
    
    Only drop BULK and INTERRUPT endpoints, to reset the data toggle,
    because for other endpoint types this is not critical.
    
    Tested by:      ehaupt@
    PR:             262882
    MFC after:      3 hours
    Sponsored by:   NVIDIA Networking
---
 sys/dev/usb/controller/xhci.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/sys/dev/usb/controller/xhci.c b/sys/dev/usb/controller/xhci.c
index 72d1ff5e0ae5..e35a0a5d2407 100644
--- a/sys/dev/usb/controller/xhci.c
+++ b/sys/dev/usb/controller/xhci.c
@@ -3848,9 +3848,16 @@ xhci_configure_reset_endpoint(struct usb_xfer *xfer)
 
 	mask = (1U << epno);
 
-	if (epno != 1 && drop != 0) {
+	/*
+	 * So-called control and isochronous transfer types have
+	 * predefined data toggles (USB 2.0) or sequence numbers (USB
+	 * 3.0) and does not need to be dropped.
+	 */
+	if (drop != 0 &&
+	    (edesc->bmAttributes & UE_XFERTYPE) != UE_CONTROL &&
+	    (edesc->bmAttributes & UE_XFERTYPE) != UE_ISOCHRONOUS) {
 		/* drop endpoint context to reset data toggle value, if any. */
-	  	xhci_configure_mask(udev, mask, 1);
+		xhci_configure_mask(udev, mask, 1);
 		err = xhci_cmd_configure_ep(sc, buf_inp.physaddr, 0, index);
 		if (err != 0) {
 			DPRINTF("Could not drop "