Re: linux-next: build failure after merge of the drm tree

From: Hamza Mahfooz
Date: Wed Oct 05 2022 - 12:45:17 EST

On 2022-10-05 11:30, Alex Deucher wrote:
@Mahfooz, Hamza
@Aurabindo Pillai can you get this fixed up?

Seems like this is a false positive for GCC versions pre-12, because I'm not seeing this warning on GCC 12.2.
However, we can fix this for older GCC versions with the following:

diff --git a/drivers/gpu/drm/amd/display/dc/dc_stream.h b/drivers/gpu/drm/amd/display/dc/dc_stream.h
index 9e6025c98db9..67fede4bf248 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_stream.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_stream.h
@@ -238,7 +238,7 @@ struct dc_stream_state {

/* writeback */
unsigned int num_wb_info;
- struct dc_writeback_info writeback_info[MAX_DWB_PIPES];
+ struct dc_writeback_info writeback_info[MAX_DWB_PIPES + 1];
const struct dc_transfer_func *func_shaper;
const struct dc_3dlut *lut3d_func;
/* Computed state bits */



On Tue, Oct 4, 2022 at 7:39 AM Mark Brown <broonie@xxxxxxxxxx> wrote:

On Tue, Oct 04, 2022 at 02:05:58PM +1100, Stephen Rothwell wrote:
On Tue, 4 Oct 2022 12:24:37 +1000 David Airlie <airlied@xxxxxxxxxx> wrote:
On Tue, Oct 4, 2022 at 12:21 PM Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:

I'm not seeing it here, what gcc is this with?

I am using an x86_64 cross compiler hosted on ppc64le - gcc v11.2.0 (on

I was seeing this with an x86_64 cross compiler hosted on arm64 -
Ubuntu 11.2.0-17ubuntu1 from the looks of it.