linux-kernel - [PATCH AUTOSEL 6.5 13/36] drm/amdgpu: Update ring scheduler info as needed

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Message-Id: <20230908192848.3462476-13-sashal@kernel.org>
Date:   Fri,  8 Sep 2023 15:28:24 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Lijo Lazar <lijo.lazar@....com>, James Zhu <James.Zhu@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Sasha Levin <sashal@...nel.org>, christian.koenig@....com,
        Xinhui.Pan@....com, airlied@...il.com, daniel@...ll.ch,
        Hawking.Zhang@....com, le.ma@....com, Philip.Yang@....com,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 6.5 13/36] drm/amdgpu: Update ring scheduler info as needed

From: Lijo Lazar <lijo.lazar@....com>

[ Upstream commit 6cb209ed68e45c8e4b71d97a037ac6b7dbce9b50 ]

Not all rings have scheduler associated. Only update scheduler data for
rings with scheduler. It could result in out of bound access as total
rings are more than those associated with particular IPs.

Signed-off-by: Lijo Lazar <lijo.lazar@....com>
Reviewed-by: James Zhu <James.Zhu@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/amdgpu/aqua_vanjaram_reg_init.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram_reg_init.c b/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram_reg_init.c
index 72b629a78c62c..d0fc62784e821 100644
--- a/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram_reg_init.c
+++ b/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram_reg_init.c
@@ -134,7 +134,7 @@ static int aqua_vanjaram_xcp_sched_list_update(
 
 	for (i = 0; i < AMDGPU_MAX_RINGS; i++) {
 		ring = adev->rings[i];
-		if (!ring || !ring->sched.ready)
+		if (!ring || !ring->sched.ready || ring->no_scheduler)
 			continue;
 
 		aqua_vanjaram_xcp_gpu_sched_update(adev, ring, ring->xcp_id);
-- 
2.40.1