diff options
Diffstat (limited to 'drivers/video/omap2/omapfb/omapfb.h')
| -rw-r--r-- | drivers/video/omap2/omapfb/omapfb.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/video/omap2/omapfb/omapfb.h b/drivers/video/omap2/omapfb/omapfb.h index 676b55d..1305fc9 100644 --- a/drivers/video/omap2/omapfb/omapfb.h +++ b/drivers/video/omap2/omapfb/omapfb.h @@ -56,6 +56,7 @@ struct omapfb2_mem_region { bool map; /* kernel mapped by the driver */ atomic_t map_count; struct rw_semaphore lock; + atomic_t lock_count; }; /* appended to fb_info */ @@ -166,11 +167,13 @@ static inline struct omapfb2_mem_region * omapfb_get_mem_region(struct omapfb2_mem_region *rg) { down_read_nested(&rg->lock, rg->id); + atomic_inc(&rg->lock_count); return rg; } static inline void omapfb_put_mem_region(struct omapfb2_mem_region *rg) { + atomic_dec(&rg->lock_count); up_read(&rg->lock); } |