Date: Thu, 25 Sep 2014 05:59:13 +0000 (UTC) From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r272092 - stable/9/sys/dev/usb/controller Message-ID: <201409250559.s8P5xDWW054115@svn.freebsd.org>
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Author: hselasky Date: Thu Sep 25 05:59:12 2014 New Revision: 272092 URL: http://svnweb.freebsd.org/changeset/base/272092 Log: MFC r271953: Some XHCI hardware requires dropping the endpoint context before adding it again. Modified: stable/9/sys/dev/usb/controller/xhci.c Directory Properties: stable/9/sys/ (props changed) stable/9/sys/dev/ (props changed) Modified: stable/9/sys/dev/usb/controller/xhci.c ============================================================================== --- stable/9/sys/dev/usb/controller/xhci.c Thu Sep 25 05:47:33 2014 (r272091) +++ stable/9/sys/dev/usb/controller/xhci.c Thu Sep 25 05:59:12 2014 (r272092) @@ -2217,7 +2217,14 @@ xhci_configure_mask(struct usb_device *u xhci_ctx_set_le32(sc, &pinp->ctx_input.dwInCtx0, mask); xhci_ctx_set_le32(sc, &pinp->ctx_input.dwInCtx1, 0); } else { - xhci_ctx_set_le32(sc, &pinp->ctx_input.dwInCtx0, 0); + /* + * Some hardware requires that we drop the endpoint + * context before adding it again: + */ + xhci_ctx_set_le32(sc, &pinp->ctx_input.dwInCtx0, + mask & XHCI_INCTX_NON_CTRL_MASK); + + /* Add new endpoint context */ xhci_ctx_set_le32(sc, &pinp->ctx_input.dwInCtx1, mask); /* find most significant set bit */
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