[PATCH 2/2] drm/omap: add GEM support for tiled/dmm buffers

[Alan Cox]

On Mon,  5 Dec 2011 19:19:22 -0600
Rob Clark <rob.clark at linaro.org> wrote:

> +	usergart = kzalloc(3 * sizeof(*usergart), GFP_KERNEL);
> +
> +	/* reserve 4k aligned/wide regions for userspace mappings: */
> +	for (i = 0; i < ARRAY_SIZE(fmts); i++) {
> +		uint16_t h = 1, w = PAGE_SIZE >> i;
> +		tiler_align(fmts[i], &w, &h);
> +		/* note: since each region is 1 4kb page wide, and minimum
> +		 * number of rows, the height ends up being the same as the
> +		 * # of pages in the region
> +		 */
> +		usergart[i].height = h;
> +		usergart[i].height_shift = ilog2(h);

Seems to be missing anallocation failure check