git: afca4d971b2d - stable/13 - linuxkpi: Add kfifo.h

The branch stable/13 has been updated by manu:

URL: https://cgit.FreeBSD.org/src/commit/?id=afca4d971b2d2ccf27d01669b1d72fd8c829a934

commit afca4d971b2d2ccf27d01669b1d72fd8c829a934
Author:     Emmanuel Vadot <manu@FreeBSD.org>
AuthorDate: 2022-06-23 07:50:29 +0000
Commit:     Emmanuel Vadot <manu@FreeBSD.org>
CommitDate: 2022-09-07 15:09:02 +0000

    linuxkpi: Add kfifo.h
    
    Provide macros needed for drm-kmod.
    
    Reviewed by:    bz
    MFC after:      1 week
    Sponsored by:   Beckhoff Automation GmbH & Co. KG
    Differential Revision:  https://reviews.freebsd.org/D35563
    
    (cherry picked from commit 088b746cbda664602f9cee0d1415ae8d98389f38)
---
 sys/compat/linuxkpi/common/include/linux/kfifo.h | 33 ++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/sys/compat/linuxkpi/common/include/linux/kfifo.h b/sys/compat/linuxkpi/common/include/linux/kfifo.h
new file mode 100644
index 000000000000..6ba1528d965c
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/kfifo.h
@@ -0,0 +1,33 @@
+/*-
+ * Copyright (c) 2021 Beckhoff Automation GmbH & Co. KG
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
+ *
+ */
+
+#ifndef _LINUXKPI_LINUX_KFIFO_H_
+#define	_LINUXKPI_LINUX_KFIFO_H_
+
+#define	INIT_KFIFO(x)	0
+#define	DECLARE_KFIFO(x, y, z)
+
+#endif	/* _LINUXKPI_LINUX_KFIFO_H_*/