From: Hawking Zhang <Hawking.Zhang@amd.com>
Date: Sat, 17 Jan 2026 11:25:56 +0000 (+0800)
Subject: drm/amdgpu/gmc12: Bypass FB resize on A + A platform
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=c5f8454cd195267c6934f731d9d3be65395e53b9;p=thirdparty%2Flinux.git

drm/amdgpu/gmc12: Bypass FB resize on A + A platform

Resizing fb bar is not needed/supported on A + A
platform.

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Le Ma <le.ma@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
index 654c1c7adfae4..2bbd63ffe7105 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
@@ -725,7 +725,8 @@ static int gmc_v12_0_mc_init(struct amdgpu_device *adev)
 		adev->nbio.funcs->get_memsize(adev) * 1024ULL * 1024ULL;
 	adev->gmc.real_vram_size = adev->gmc.mc_vram_size;
 
-	if (!(adev->flags & AMD_IS_APU)) {
+	if (!(adev->flags & AMD_IS_APU) &&
+	    !adev->gmc.xgmi.connected_to_cpu) {
 		r = amdgpu_device_resize_fb_bar(adev);
 		if (r)
 			return r;