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SubjectRe: [PATCH v2 2/4] drm_vblank_get: don't WARN_ON in case vblanks are not initialized
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On Wed, Apr 1, 2015 at 9:15 AM, Gerd Hoffmann <kraxel@redhat.com> wrote:
> 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 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
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel


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