The patch titled
uml: audio driver locking
has been added to the -mm tree. Its filename is
uml-audio-driver-locking.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: uml: audio driver locking
From: Jeff Dike <jdike@xxxxxxxxxxx>
Comment the lack of locking and make a couple of variables static.
Signed-off-by: Jeff Dike <jdike@xxxxxxxxxxx>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/um/drivers/hostaudio_kern.c | 9 ++++++---
1 files changed, 6 insertions(+), 3 deletions(-)
diff -puN arch/um/drivers/hostaudio_kern.c~uml-audio-driver-locking arch/um/drivers/hostaudio_kern.c
--- a/arch/um/drivers/hostaudio_kern.c~uml-audio-driver-locking
+++ a/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" \
_
Patches currently in -mm which might be from jdike@xxxxxxxxxxx are
x86_64-i386-kernel-mode-faults-pollute-current-thead.patch
uml-console-locking-fixes.patch
uml-return-hotplug-errors-to-host.patch
uml-console-whitespace-and-comment-tidying.patch
uml-lock-the-irqs_to_free-list.patch
uml-add-locking-to-network-transport-registration.patch
uml-network-driver-whitespace-and-style-fixes.patch
uml-watchdog-driver-locking.patch
uml-watchdog-driver-formatting.patch
uml-audio-driver-locking.patch
uml-audio-driver-formatting.patch
uml-mconsole-locking.patch
uml-make-two-variables-static.patch
uml-port-driver-formatting.patch
uml-kill-a-compilation-warning.patch
uml-fix-prototypes.patch
rewrite-unnecessary-duplicated-code-to-use-field_sizeof.patch
-
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