FAILED: patch "[PATCH] drm/amdgpu/soc24: reset dGPU if suspend got aborted" failed to apply to 6.12-stable tree

The patch below does not apply to the 6.12-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.12.y
git checkout FETCH_HEAD
git cherry-pick -x aff079bdce65f6d085e4b0091fdf87fffa95b0d9
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<[email protected]>' --in-reply-to '2026072934-scary-aflutter-5331@gregkh' --subject-prefix 'PATCH 6.12.y' 'HEAD^..'

Possible dependencies:

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From aff079bdce65f6d085e4b0091fdf87fffa95b0d9 Mon Sep 17 00:00:00 2001
From: Jakob Linke <[email protected]>
Date: Wed, 17 Jun 2026 08:24:15 +0200
Subject: [PATCH] drm/amdgpu/soc24: reset dGPU if suspend got aborted

For SOC24 ASICs (RDNA4 / Navi 4x dGPUs) re-enabling PM features fails if an S3 suspend got aborted, the same issue already handled for SOC21 and SOC15:

commit df3c7dc5c58b ("drm/amdgpu: Reset dGPU if suspend got aborted") commit 38e8ca3e4b6d ("amdgpu/soc15: enable asic reset for dGPU in case of suspend abort")

The aborted resume fails with:

amdgpu: SMU: No response msg_reg: 6 resp_reg: 0
amdgpu: Failed to enable requested dpm features!
amdgpu: resume of IP block <smu> failed -62

Apply the same workaround for soc24: detect the aborted-suspend state at resume via the sign-of-life register and reset the device before re-init.

This is a workaround till a proper solution is finalized.

index 265db9331d0b..9dce30d2bb8d 100644
@@ -496,8 +496,36 @@ static int soc24_common_suspend(struct amdgpu_ip_block *ip_block)
 	return soc24_common_hw_fini(ip_block);
 }
 
+static bool soc24_need_reset_on_resume(struct amdgpu_device *adev)
+{
+	u32 sol_reg1, sol_reg2;
+
+	/* Will reset for the following suspend abort cases.
+	 * 1) Only reset dGPU side.
+	 * 2) S3 suspend got aborted and TOS is active.
+	 *    As for dGPU suspend abort cases the SOL value
+	 *    will be kept as zero at this resume point.
+	 */
+	if (!(adev->flags & AMD_IS_APU) && adev->in_s3) {
+		sol_reg1 = RREG32_SOC15(MP0, 0, regMPASP_SMN_C2PMSG_81);
+		msleep(100);
+		sol_reg2 = RREG32_SOC15(MP0, 0, regMPASP_SMN_C2PMSG_81);
+
+		return (sol_reg1 != sol_reg2);
+	}
+
+	return false;
+}
+
 static int soc24_common_resume(struct amdgpu_ip_block *ip_block)
 {
+	struct amdgpu_device *adev = ip_block->adev;
+
+	if (soc24_need_reset_on_resume(adev)) {
+		dev_info(adev->dev, "S3 suspend aborted, resetting...");
+		soc24_asic_reset(adev);
+	}
+
 	return soc24_common_hw_init(ip_block);
 }