Messages in this thread Patch in this message | | | From | Gerd Hoffmann <> | Subject | [PATCH v3 3/4] drm_vblank_get: don't WARN_ON in case vblanks are not initialized | Date | Fri, 22 May 2015 15:11:51 +0200 |
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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
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