[PATCH] drm/tegra: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERO

[Stephen Warren]

On 04/11/2014 02:36 AM, Duan Jiong wrote:
> This patch fixes coccinelle error regarding usage of IS_ERR and
> PTR_ERR instead of PTR_ERR_OR_ZERO.

Same comment as the other patch; I prefer the existing code (although
I'll defer to Thierry as maintainer of both these pieces of code).

It would help if the commit description quoted the coccinelle error.