[src/nathanw_sa]: src/sys/arch/algor/pci Only call through the function point...

[thorpej <thorpej%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/bbe126a2bfc4
branches:  nathanw_sa
changeset: 504799:bbe126a2bfc4
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Fri Jun 22 01:42:21 2001 +0000

description:
Only call through the function pointer if it's not NULL.

diffstat:

 sys/arch/algor/pci/pciide_machdep.c |  68 +++++++++++++++++++++++++++++++++++++
 1 files changed, 68 insertions(+), 0 deletions(-)

diffs (72 lines):

diff -r 9141fd23ad17 -r bbe126a2bfc4 sys/arch/algor/pci/pciide_machdep.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/algor/pci/pciide_machdep.c       Fri Jun 22 01:42:21 2001 +0000
@@ -0,0 +1,68 @@
+/*     $NetBSD: pciide_machdep.c,v 1.2.8.2 2001/06/22 01:42:21 thorpej Exp $   */
+
+/*
+ * Copyright (c) 1998 Christopher G. Demetriou.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Christopher G. Demetriou
+ *     for the NetBSD Project.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * PCI IDE controller driver (Algorithmics machine-dependent portion).
+ *
+ * Author: Christopher G. Demetriou, March 2, 1998 (derived from NetBSD
+ * sys/dev/pci/ppb.c, revision 1.16).
+ *
+ * See "PCI IDE Controller Specification, Revision 1.0 3/4/94" from the
+ * PCI SIG.
+ */
+
+#include <sys/cdefs.h>                 /* RCS ID & Copyright macro defns */
+
+__KERNEL_RCSID(0, "$NetBSD: pciide_machdep.c,v 1.2.8.2 2001/06/22 01:42:21 thorpej Exp $");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+
+#include <dev/pci/pcireg.h>
+#include <dev/pci/pcivar.h>
+#include <dev/pci/pciidereg.h>
+#include <dev/pci/pciidevar.h>
+
+#include <dev/isa/isavar.h>
+
+void *
+pciide_machdep_compat_intr_establish(struct device *dev,
+    struct pci_attach_args *pa, int chan, int (*func)(void *), void *arg)
+{
+       pci_chipset_tag_t pc = pa->pa_pc;
+
+       if (pc->pc_pciide_compat_intr_establish == NULL)
+               return (NULL);
+       return (algor_pciide_compat_intr_establish(pc, dev, pa, chan,
+           func, arg));
+}