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Diffstat (limited to 'drivers/video/omap2/omapfb/omapfb.h')
-rw-r--r--drivers/video/omap2/omapfb/omapfb.h13
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/video/omap2/omapfb/omapfb.h b/drivers/video/omap2/omapfb/omapfb.h
index db3aef5172c5..195a760eef54 100644
--- a/drivers/video/omap2/omapfb/omapfb.h
+++ b/drivers/video/omap2/omapfb/omapfb.h
@@ -27,6 +27,8 @@
#define DEBUG
#endif
+#include <linux/rwsem.h>
+
#include <plat/display.h>
#ifdef DEBUG
@@ -52,9 +54,8 @@ struct omapfb2_mem_region {
u8 type; /* OMAPFB_PLANE_MEM_* */
bool alloc; /* allocated by the driver */
bool map; /* kernel mapped by the driver */
- struct mutex mtx;
- unsigned int ref;
atomic_t map_count;
+ struct rw_semaphore lock;
};
/* appended to fb_info */
@@ -164,17 +165,13 @@ static inline int omapfb_overlay_enable(struct omap_overlay *ovl,
static inline struct omapfb2_mem_region *
omapfb_get_mem_region(struct omapfb2_mem_region *rg)
{
- mutex_lock(&rg->mtx);
- rg->ref++;
- mutex_unlock(&rg->mtx);
+ down_read(&rg->lock);
return rg;
}
static inline void omapfb_put_mem_region(struct omapfb2_mem_region *rg)
{
- mutex_lock(&rg->mtx);
- rg->ref--;
- mutex_unlock(&rg->mtx);
+ up_read(&rg->lock);
}
#endif

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