From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio

---
 kernel/drivers/gpu/drm/msm/msm_iommu.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/kernel/drivers/gpu/drm/msm/msm_iommu.c b/kernel/drivers/gpu/drm/msm/msm_iommu.c
index 2dcb7d1..becefff 100644
--- a/kernel/drivers/gpu/drm/msm/msm_iommu.c
+++ b/kernel/drivers/gpu/drm/msm/msm_iommu.c
@@ -154,7 +154,12 @@
 	/* Get the pagetable configuration from the domain */
 	if (adreno_smmu->cookie)
 		ttbr1_cfg = adreno_smmu->get_ttbr1_cfg(adreno_smmu->cookie);
-	if (!ttbr1_cfg)
+
+	/*
+	 * If you hit this WARN_ONCE() you are probably missing an entry in
+	 * qcom_smmu_impl_of_match[] in arm-smmu-qcom.c
+	 */
+	if (WARN_ONCE(!ttbr1_cfg, "No per-process page tables"))
 		return ERR_PTR(-ENODEV);
 
 	pagetable = kzalloc(sizeof(*pagetable), GFP_KERNEL);

--
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