diff options
| author | Daniel Walker <dwalker@mvista.com> | 2008-02-04 22:31:27 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-05 09:44:31 -0800 |
| commit | e98fa28160eabdcda4c4c5bf7af7a3256c10c922 (patch) | |
| tree | 42745f2bece303689d51d7b5e39dcfe9065c9d39 /arch/um | |
| parent | 01ac835fdd121f36dded404af15225101f6ccee3 (diff) | |
| download | blackbird-op-linux-e98fa28160eabdcda4c4c5bf7af7a3256c10c922.tar.gz blackbird-op-linux-e98fa28160eabdcda4c4c5bf7af7a3256c10c922.zip | |
uml: mconsole mutex conversion
The plug_mem_mutex is already used as a mutex since it's using
DECLARE_MUTEX(), but the underlying construct is still a semaphore .. This
patch switches it over to a struct mutex.
Signed-off-by: Daniel Walker <dwalker@mvista.com>
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um')
| -rw-r--r-- | arch/um/drivers/mconsole_kern.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c index 949037e92a7b..9820fdbb9c73 100644 --- a/arch/um/drivers/mconsole_kern.c +++ b/arch/um/drivers/mconsole_kern.c @@ -17,6 +17,7 @@ #include "linux/syscalls.h" #include "linux/utsname.h" #include "linux/workqueue.h" +#include "linux/mutex.h" #include "asm/uaccess.h" #include "init.h" #include "irq_kern.h" @@ -360,7 +361,7 @@ struct unplugged_pages { void *pages[UNPLUGGED_PER_PAGE]; }; -static DECLARE_MUTEX(plug_mem_mutex); +static DEFINE_MUTEX(plug_mem_mutex); static unsigned long long unplugged_pages_count = 0; static LIST_HEAD(unplugged_pages); static int unplug_index = UNPLUGGED_PER_PAGE; @@ -396,7 +397,7 @@ static int mem_config(char *str, char **error_out) diff /= PAGE_SIZE; - down(&plug_mem_mutex); + mutex_lock(&plug_mem_mutex); for (i = 0; i < diff; i++) { struct unplugged_pages *unplugged; void *addr; @@ -453,7 +454,7 @@ static int mem_config(char *str, char **error_out) err = 0; out_unlock: - up(&plug_mem_mutex); + mutex_unlock(&plug_mem_mutex); out: return err; } |
