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From: Hans Petter Selasky <hselasky@FreeBSD.org>
Date: Thu, 2 Oct 2014 16:56:00 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r272422 - head/sys/dev/usb/controller
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Author: hselasky
Date: Thu Oct  2 16:56:00 2014
New Revision: 272422
URL: https://svnweb.freebsd.org/changeset/base/272422

Log:
  Make sure we always set the maximum number of valid contexts.
  
  MFC after:	3 days

Modified:
  head/sys/dev/usb/controller/xhci.c

Modified: head/sys/dev/usb/controller/xhci.c
==============================================================================
--- head/sys/dev/usb/controller/xhci.c	Thu Oct  2 16:49:22 2014	(r272421)
+++ head/sys/dev/usb/controller/xhci.c	Thu Oct  2 16:56:00 2014	(r272422)
@@ -2271,14 +2271,17 @@ xhci_configure_mask(struct usb_device *u
 		/* adjust */
 		x--;
 
-		/* figure out maximum */
-		if (x > sc->sc_hw.devs[index].context_num) {
+		/* figure out the maximum number of contexts */
+		if (x > sc->sc_hw.devs[index].context_num)
 			sc->sc_hw.devs[index].context_num = x;
-			temp = xhci_ctx_get_le32(sc, &pinp->ctx_slot.dwSctx0);
-			temp &= ~XHCI_SCTX_0_CTX_NUM_SET(31);
-			temp |= XHCI_SCTX_0_CTX_NUM_SET(x + 1);
-			xhci_ctx_set_le32(sc, &pinp->ctx_slot.dwSctx0, temp);
-		}
+		else
+			x = sc->sc_hw.devs[index].context_num;
+
+		/* update number of contexts */
+		temp = xhci_ctx_get_le32(sc, &pinp->ctx_slot.dwSctx0);
+		temp &= ~XHCI_SCTX_0_CTX_NUM_SET(31);
+		temp |= XHCI_SCTX_0_CTX_NUM_SET(x + 1);
+		xhci_ctx_set_le32(sc, &pinp->ctx_slot.dwSctx0, temp);
 	}
 	return (0);
 }