lkml.org 
[lkml]   [2015]   [May]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v3 3/4] drm_vblank_get: don't WARN_ON in case vblanks are not initialized
Date
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/drm_irq.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index af9662e..265793c 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -1029,6 +1029,9 @@ int drm_vblank_get(struct drm_device *dev, int crtc)
unsigned long irqflags;
int ret = 0;

+ if (!dev->num_crtcs)
+ return -EINVAL;
+
if (WARN_ON(crtc >= dev->num_crtcs))
return -EINVAL;

--
1.8.3.1


\
 
 \ /
  Last update: 2015-05-22 15:21    [W:0.033 / U:0.688 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site