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drm: ditch strange DRIVER_DMA_QUEUE only error bail-out 

Only one driver (i810) even sets that flag. Now the actual locking
code uncoditionally promotes lock->context to an unsigned int.

Closer inspection of the userspace reveals that the drm lock context
is defined as an unsigned int (at least on linux). I suspect we just
have a strange case of signedness confusion going on.

Tested on my i815, doesn't seem to break anything.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Daniel Vetter 2011-10-26 00:53:57 +02:00 committed by Dave Airlie
parent b0071efe82
commit 4c373790a4
1 changed files with 0 additions and 4 deletions
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4
drivers/gpu/drm/drm_lock.c
View File

@ -70,10 +70,6 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
lock->context, task_pid_nr(current),
master->lock.hw_lock->lock, lock->flags);
if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE))
if (lock->context < 0)
return -EINVAL;
add_wait_queue(&master->lock.lock_queue, &entry);
spin_lock_bh(&master->lock.spinlock);
master->lock.user_waiters++;