Module Name: src
Committed By: riastradh
Date: Mon Mar 28 12:34:08 UTC 2022
Modified Files:
src/sys/kern: subr_devsw.c
src/sys/sys: conf.h
Log Message:
driver(9): New function dev_minor_unit.
To generate a diff of this commit:
cvs rdiff -u -r1.41 -r1.42 src/sys/kern/subr_devsw.c
cvs rdiff -u -r1.156 -r1.157 src/sys/sys/conf.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/kern/subr_devsw.c
diff -u src/sys/kern/subr_devsw.c:1.41 src/sys/kern/subr_devsw.c:1.42
--- src/sys/kern/subr_devsw.c:1.41 Mon Mar 28 12:33:50 2022
+++ src/sys/kern/subr_devsw.c Mon Mar 28 12:34:08 2022
@@ -1,4 +1,4 @@
-/* $NetBSD: subr_devsw.c,v 1.41 2022/03/28 12:33:50 riastradh Exp $ */
+/* $NetBSD: subr_devsw.c,v 1.42 2022/03/28 12:34:08 riastradh Exp $ */
/*-
* Copyright (c) 2001, 2002, 2007, 2008 The NetBSD Foundation, Inc.
@@ -69,7 +69,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: subr_devsw.c,v 1.41 2022/03/28 12:33:50 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: subr_devsw.c,v 1.42 2022/03/28 12:34:08 riastradh Exp $");
#ifdef _KERNEL_OPT
#include "opt_dtrace.h"
@@ -1299,3 +1299,18 @@ nommap(dev_t dev, off_t off, int prot)
return (paddr_t)-1;
}
+
+/*
+ * dev_minor_unit(dev)
+ *
+ * Returns minor(dev) as an int. Intended for use with struct
+ * bdevsw, cdevsw::d_devtounit for drivers whose /dev nodes are
+ * implemented by reference to an autoconf instance with the minor
+ * number.
+ */
+int
+dev_minor_unit(dev_t dev)
+{
+
+ return minor(dev);
+}
Index: src/sys/sys/conf.h
diff -u src/sys/sys/conf.h:1.156 src/sys/sys/conf.h:1.157
--- src/sys/sys/conf.h:1.156 Mon Mar 28 12:33:50 2022
+++ src/sys/sys/conf.h Mon Mar 28 12:34:08 2022
@@ -1,4 +1,4 @@
-/* $NetBSD: conf.h,v 1.156 2022/03/28 12:33:50 riastradh Exp $ */
+/* $NetBSD: conf.h,v 1.157 2022/03/28 12:34:08 riastradh Exp $ */
/*-
* Copyright (c) 1990, 1993
@@ -280,6 +280,7 @@ devmajor_t devsw_name2blk(const char *,
devmajor_t devsw_name2chr(const char *, char *, size_t);
dev_t devsw_chr2blk(dev_t);
dev_t devsw_blk2chr(dev_t);
+int dev_minor_unit(dev_t);
void mm_init(void);
#endif /* _KERNEL */
