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| author | Archit Taneja <archit@ti.com> | 2014-04-11 12:53:31 +0530 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-04-15 13:35:28 +0300 |
| commit | f2cff0f34ff2c51f703880a2b883ea0c9de4a5ac (patch) | |
| tree | 2144c9cbb81a5b60746632763a67ba9f6dd0238f /drivers/gpu | |
| parent | 15ec2ca964d7a52e7e0a452fe0f9c409d2f3eec6 (diff) | |
| download | op-kernel-dev-f2cff0f34ff2c51f703880a2b883ea0c9de4a5ac.zip op-kernel-dev-f2cff0f34ff2c51f703880a2b883ea0c9de4a5ac.tar.gz | |
drm/omap: gem sync: wait on correct events
A waiter of the type OMAP_GEM_READ should wait for a buffer to be completely
written, and only then proceed with reading it. A similar logic applies for
waiters with OMAP_GEM_WRITE flag.
Currently the function is_waiting() waits on the read_complete/read_target
counts in the sync object.
This should be the other way round, as a reader should wait for users who are
'writing' to this buffer, and vice versa.
Make readers of the buffer(OMAP_GEM_READ) wait on the write counters, and
writers to the buffer(OMAP_GEM_WRITE) wait on the read counters in is_waiting()
Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/omapdrm/omap_gem.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/omapdrm/omap_gem.c b/drivers/gpu/drm/omapdrm/omap_gem.c index 9a68e9a2..95dbce2 100644 --- a/drivers/gpu/drm/omapdrm/omap_gem.c +++ b/drivers/gpu/drm/omapdrm/omap_gem.c @@ -1047,10 +1047,10 @@ static inline bool is_waiting(struct omap_gem_sync_waiter *waiter) { struct omap_gem_object *omap_obj = waiter->omap_obj; if ((waiter->op & OMAP_GEM_READ) && - (omap_obj->sync->read_complete < waiter->read_target)) + (omap_obj->sync->write_complete < waiter->write_target)) return true; if ((waiter->op & OMAP_GEM_WRITE) && - (omap_obj->sync->write_complete < waiter->write_target)) + (omap_obj->sync->read_complete < waiter->read_target)) return true; return false; } |
