diff options
| author | Daniel Walker <dwalker@mvista.com> | 2008-02-05 08:35:47 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-04-20 04:10:19 +0200 |
| commit | da19cbcf71cde3c09587b5924d113f0c7f1fd23a (patch) | |
| tree | f1731d6a0f8606afcc283c5540055d8e56bb7309 | |
| parent | UIO: hold a reference to the device's owner while the device is open (diff) | |
| download | linux-da19cbcf71cde3c09587b5924d113f0c7f1fd23a.tar.xz linux-da19cbcf71cde3c09587b5924d113f0c7f1fd23a.zip | |
driver core: memory: semaphore to mutex
Signed-off-by: Daniel Walker <dwalker@mvista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/base/memory.c | 7 | ||||
| -rw-r--r-- | include/linux/memory.h | 5 | ||||
| -rw-r--r-- | mm/memory_hotplug.c | 2 |
3 files changed, 7 insertions, 7 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 7ae413fdd5fc..1f3801a8184d 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -20,6 +20,7 @@ #include <linux/kobject.h> #include <linux/memory_hotplug.h> #include <linux/mm.h> +#include <linux/mutex.h> #include <asm/atomic.h> #include <asm/uaccess.h> @@ -205,7 +206,7 @@ static int memory_block_change_state(struct memory_block *mem, unsigned long to_state, unsigned long from_state_req) { int ret = 0; - down(&mem->state_sem); + mutex_lock(&mem->state_mutex); if (mem->state != from_state_req) { ret = -EINVAL; @@ -217,7 +218,7 @@ static int memory_block_change_state(struct memory_block *mem, mem->state = to_state; out: - up(&mem->state_sem); + mutex_unlock(&mem->state_mutex); return ret; } @@ -341,7 +342,7 @@ static int add_memory_block(unsigned long node_id, struct mem_section *section, mem->phys_index = __section_nr(section); mem->state = state; - init_MUTEX(&mem->state_sem); + mutex_init(&mem->state_mutex); mem->phys_device = phys_device; ret = register_memory(mem, section, NULL); diff --git a/include/linux/memory.h b/include/linux/memory.h index 33f0ff0cf634..f80e0e331cb7 100644 --- a/include/linux/memory.h +++ b/include/linux/memory.h @@ -18,8 +18,7 @@ #include <linux/sysdev.h> #include <linux/node.h> #include <linux/compiler.h> - -#include <asm/semaphore.h> +#include <linux/mutex.h> struct memory_block { unsigned long phys_index; @@ -30,7 +29,7 @@ struct memory_block { * created long after the critical areas during * initialization. */ - struct semaphore state_sem; + struct mutex state_mutex; int phys_device; /* to which fru does this belong? */ void *hw; /* optional pointer to fw/hw data */ int (*phys_callback)(struct memory_block *); diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 7469c503580d..0fb330271271 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -208,7 +208,7 @@ int online_pages(unsigned long pfn, unsigned long nr_pages) /* * This doesn't need a lock to do pfn_to_page(). * The section can't be removed here because of the - * memory_block->state_sem. + * memory_block->state_mutex. */ zone = page_zone(pfn_to_page(pfn)); pgdat_resize_lock(zone->zone_pgdat, &flags); |