xnu-792.21.3.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 40195fb386ddd53fe15919c87edbb15e26ef70a8..79b811d43bf920ff16af51db384216d32f0a3b77 100644 (file)
--- a/bsd/netat/adsp_attention.c
+++ b/bsd/netat/adsp_attention.c
@@ -78,6 +78,7 @@
  */
 int adspAttention(register struct adspcmd *pb, register CCBPtr sp)
 {
+    int        s;
     register gbuf_t *mp, *nmp;
     unsigned char uerr;
        
@@ -120,13 +121,16 @@ 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;