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drm/vmwgfx: fix a NULL dereference 

We dereference "eaction->event" inside the call to drm_send_event_locked()
so should hold off on setting it to NULL until afterward.

Fixes: fb740cf249 ("drm: Create drm_send_event helpers")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20160128090646.GA5824@mwanda
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Dan Carpenter 2016-01-28 12:06:46 +03:00 committed by Daniel Vetter
parent 09859d2a3c
commit 15b6b804b6
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/vmwgfx/vmwgfx_fence.c
View File

@ -880,8 +880,8 @@ static void vmw_event_fence_action_seq_passed(struct vmw_fence_action *action)
}
list_del_init(&eaction->fpriv_head);
eaction->event = NULL;
drm_send_event_locked(dev, eaction->event);
eaction->event = NULL;
spin_unlock_irqrestore(&dev->event_lock, irq_flags);
}