On Mon, 1 Jul 2013 22:01:04 +0200
Daniel Vetter <daniel.vetter@xxxxxxxx> wrote:
> The usual drm driver has tons of different drm_mm memory managers so
> the drm error message in dmesg is pretty useless. WARN instead so
> that we have the full backtrace.
>
> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
I've written this patch myself a number of times.
Reviewed-by: Ben Widawsky <ben@xxxxxxxxxxxx>
> ---
> drivers/gpu/drm/drm_mm.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c
> index f9d4873..d303e31 100644
> --- a/drivers/gpu/drm/drm_mm.c
> +++ b/drivers/gpu/drm/drm_mm.c
> @@ -699,8 +699,8 @@ void drm_mm_takedown(struct drm_mm * mm)
> {
> struct drm_mm_node *entry, *next;
>
> - if (!list_empty(&mm->head_node.node_list)) {
> - DRM_ERROR("Memory manager not clean. Delaying
> takedown\n");
> + if (WARN(!list_empty(&mm->head_node.node_list),
> + "Memory manager not clean. Delaying takedown\n")) {
> return;
> }
>
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