diff options
| author | joshua stein <jcs@cvs.openbsd.org> | 2004-11-11 08:28:29 +0000 |
|---|---|---|
| committer | joshua stein <jcs@cvs.openbsd.org> | 2004-11-11 08:28:29 +0000 |
| commit | 56bcca54a270f698c9e3bd6140e6a0c8445e8f1d (patch) | |
| tree | f5832bea778b1bd95204d085670f8606d1efcfb6 | |
| parent | 4b1c80158ca232178dd544bcec45086818e33cac (diff) | |
no need to lock access for reading
| -rw-r--r-- | share/man/man4/man4.i386/nvram.4 | 13 | ||||
| -rw-r--r-- | sys/arch/i386/i386/nvram.c | 12 |
2 files changed, 2 insertions, 23 deletions
diff --git a/share/man/man4/man4.i386/nvram.4 b/share/man/man4/man4.i386/nvram.4 index c131dc1cfda..e1af6bea010 100644 --- a/share/man/man4/man4.i386/nvram.4 +++ b/share/man/man4/man4.i386/nvram.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: nvram.4,v 1.1 2004/10/03 21:28:34 jcs Exp $ +.\" $OpenBSD: nvram.4,v 1.2 2004/11/11 08:28:28 jcs Exp $ .\" .\" Copyright 2004 Joshua Stein <jcs@openbsd.org> .\" All rights reserved. @@ -42,17 +42,6 @@ This data is provided as a seekable character device, Checksums of the NVRAM contents are calculated over bytes 2 to 31 and stored in byte 32. A valid checksum is required for the driver to initialize. -.Pp -Only one process may have this device open at any given time; -.Xr open 2 -and -.Xr close 2 -are used to lock and relinquish it. -An attempt to -.Fn open -when another process has the device locked will return \-1 with an -.Er EBUSY -error indication. .Sh FILES .Bl -tag -width /dev/nvram .It Pa /dev/nvram diff --git a/sys/arch/i386/i386/nvram.c b/sys/arch/i386/i386/nvram.c index 051d19f59c8..d943a2c7d16 100644 --- a/sys/arch/i386/i386/nvram.c +++ b/sys/arch/i386/i386/nvram.c @@ -1,4 +1,4 @@ -/* $OpenBSD: nvram.c,v 1.2 2004/10/12 16:17:14 naddy Exp $ */ +/* $OpenBSD: nvram.c,v 1.3 2004/11/11 08:28:28 jcs Exp $ */ /* * Copyright (c) 2004 Joshua Stein <jcs@openbsd.org> @@ -52,7 +52,6 @@ int nvramread(dev_t dev, struct uio *uio, int flags); int nvram_csum_valid(void); int nvram_get_byte(int byteno); -static int nvram_opened; static int nvram_initialized; void @@ -65,9 +64,7 @@ nvramattach(int num) #ifdef NVRAM_DEBUG printf("nvram: initialized\n"); #endif - nvram_initialized = 1; - nvram_opened = 0; } else printf("nvram: invalid checksum\n"); } @@ -80,22 +77,15 @@ nvramopen(dev_t dev, int flag, int mode, struct proc *p) if ((minor(dev) != 0) || (!nvram_initialized)) return (ENXIO); - if (nvram_opened) - return (EBUSY); - if ((flag & FWRITE)) return (EPERM); - nvram_opened = 1; - return (0); } int nvramclose(dev_t dev, int flag, int mode, struct proc *p) { - nvram_opened = 0; - return (0); } |