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authorJeff Dike <jdike@addtoit.com>2007-02-10 01:43:59 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-11 10:51:21 -0800
commitb612e475e75f860002d88dd8440ce250506c5094 (patch)
treec6366175c03cf356895d74a7bf7e589b691f6887 /arch/um/drivers/hostaudio_kern.c
parent5bbcbeca2c8933ee2b3402ea5eca523d971a8785 (diff)
[PATCH] uml: audio driver locking
Comment the lack of locking and make a couple of variables static. Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um/drivers/hostaudio_kern.c')
-rw-r--r--arch/um/drivers/hostaudio_kern.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/um/drivers/hostaudio_kern.c b/arch/um/drivers/hostaudio_kern.c
index a0d148ea63d6..f61fa0562202 100644
--- a/arch/um/drivers/hostaudio_kern.c
+++ b/arch/um/drivers/hostaudio_kern.c
@@ -25,9 +25,12 @@ struct hostmixer_state {
#define HOSTAUDIO_DEV_DSP "/dev/sound/dsp"
#define HOSTAUDIO_DEV_MIXER "/dev/sound/mixer"
-/* Only changed from linux_main at boot time */
-char *dsp = HOSTAUDIO_DEV_DSP;
-char *mixer = HOSTAUDIO_DEV_MIXER;
+/* Changed either at boot time or module load time. At boot, this is
+ * single-threaded; at module load, multiple modules would each have
+ * their own copy of these variables.
+ */
+static char *dsp = HOSTAUDIO_DEV_DSP;
+static char *mixer = HOSTAUDIO_DEV_MIXER;
#define DSP_HELP \
" This is used to specify the host dsp device to the hostaudio driver.\n" \