On Mon, Mar 13, 2017 at 2:41 PM, Christian König
<deathsimple@xxxxxxxxxxx> wrote:
> From: Christian König <christian.koenig@xxxxxxx>
>
> Try to resize BAR0 to let CPU access all of VRAM.
> +void amdgpu_resize_bar0(struct amdgpu_device *adev)
> +{
> + u32 size = max(ilog2(adev->mc.real_vram_size - 1) + 1, 20) - 20;
> + int r;
> +
> + r = pci_resize_resource(adev->pdev, 0, size);
> +
Redundant.
> + if (r == -ENOTSUPP) {
> + /* The hardware don't support the extension. */
> + return;
> +
Ditto.
> + } else if (r == -ENOSPC) {
Useless use of else. And thus of curly braces.
> + DRM_INFO("Not enoigh PCI address space for a large BAR.");
> + } else if (r) {
> + DRM_ERROR("Problem resizing BAR0 (%d).", r);
> + }
> +
> + /* Reinit the doorbell mapping, it is most likely moved as well */
> + amdgpu_doorbell_fini(adev);
> + BUG_ON(amdgpu_doorbell_init(adev));
Comment why it's used here.
--
With Best Regards,
Andy Shevchenko
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