[v2] drm/amd/amdgpu: Fix array bounds check in amdgpu_hw_ip_info

[Jesse.zhang@amd.com]

From: "Jesse.zhang at amd.com" <Jesse.zhang at amd.com>

Fix an array index out of bounds warning in the DMA IP case of
amdgpu_hw_ip_info() where it was incorrectly checking
adev->gfx.gfx_ring[i].no_user_submission instead of
adev->sdma.instance[i].ring.no_user_submission.

The mismatch caused UBSAN to report an array bounds violation since
it was accessing the GFX ring array with SDMA instance indices.

Fix the commit: de412e03405f6a50(drm/amdgpu: add ring flag for no user submissions).

v2: update the commit message.

Signed-off-by: Jesse Zhang <jesse.zhang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index 0ba3ef1e4a06..6a42dea775b1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -427,7 +427,7 @@ static int amdgpu_hw_ip_info(struct amdgpu_device *adev,
 		type = AMD_IP_BLOCK_TYPE_SDMA;
 		for (i = 0; i < adev->sdma.num_instances; i++)
 			if (adev->sdma.instance[i].ring.sched.ready &&
-			    !adev->gfx.gfx_ring[i].no_user_submission)
+			    !adev->sdma.instance[i].ring.no_user_submission)
 				++num_rings;
 		ib_start_alignment = 256;
 		ib_size_alignment = 4;
-- 
2.25.1