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Date: Wed, 1 Apr 2015 15:15:28 +0200 From: Gerd Hoffmann <kraxel@...hat.com> To: dri-devel@...ts.freedesktop.org, virtio-dev@...ts.oasis-open.org Cc: airlied@...il.com, airlied@...hat.com, mst@...hat.com, Gerd Hoffmann <kraxel@...hat.com>, David Airlie <airlied@...ux.ie>, linux-kernel@...r.kernel.org (open list) Subject: [PATCH v2 2/4] drm_vblank_get: don't WARN_ON in case vblanks are not initialized Signed-off-by: Gerd Hoffmann <kraxel@...hat.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 10574a0..c631c1a 100644 --- a/drivers/gpu/drm/drm_irq.c +++ b/drivers/gpu/drm/drm_irq.c @@ -1026,6 +1026,9 @@ 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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