xnu-792.12.6.tar.gz

[apple/xnu.git] / bsd / netat / adsp_attention.c

diff --git a/bsd/netat/adsp_attention.c b/bsd/netat/adsp_attention.c
index 726692d45bff4828c15b89f35c1b761e14097040..e0f97fc918699018305dd91cf8aeecbc80824dc2 100644 (file)
--- a/bsd/netat/adsp_attention.c
+++ b/bsd/netat/adsp_attention.c
@@ -1,23 +1,31 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
  * 
- * @APPLE_LICENSE_HEADER_END@
+ * This file contains Original Code and/or Modifications of Original Code 
+ * as defined in and that are subject to the Apple Public Source License 
+ * Version 2.0 (the 'License'). You may not use this file except in 
+ * compliance with the License.  The rights granted to you under the 
+ * License may not be used to create, or enable the creation or 
+ * redistribution of, unlawful or unlicensed copies of an Apple operating 
+ * system, or to circumvent, violate, or enable the circumvention or 
+ * violation of, any terms of an Apple operating system software license 
+ * agreement.
+ *
+ * Please obtain a copy of the License at 
+ * http://www.opensource.apple.com/apsl/ and read it before using this 
+ * file.
+ *
+ * The Original Code and all software distributed under the License are 
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
+ * Please see the License for the specific language governing rights and 
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  */
 /* 
  * dspAttention.c 
@@ -72,6 +80,7 @@
  */
 int adspAttention(register struct adspcmd *pb, register CCBPtr sp)
 {
+    int        s;
     register gbuf_t *mp, *nmp;
     unsigned char uerr;
        
@@ -114,13 +123,16 @@ l_err:
        }
     }
     pb->ioDirection = 1;       /* outgoing attention data */
+    ATDISABLE(s, sp->lock);
     if (sp->sapb) {            /* Pending attentions already? */
-               qAddToEnd(&sp->sapb, pb); /* Just add to end of queue */
+       qAddToEnd(&sp->sapb, pb); /* Just add to end of queue */
+       ATENABLE(s, sp->lock);
     } else {
-               sp->sendAttnData = 1;   /* Start off this attention */
-               pb->qLink = 0;
-               sp->sapb = pb;
-               CheckSend(sp);
+       sp->sendAttnData = 1;   /* Start off this attention */
+       pb->qLink = 0;
+       sp->sapb = pb;
+       ATENABLE(s, sp->lock);
+       CheckSend(sp);
     }
     pb->ioResult = 1;  /* indicate that the IO is not complete */
     return 0;