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authorJason Gunthorpe <[email protected]>2023-06-27 17:06:29 +0000
committerJason Gunthorpe <[email protected]>2023-06-27 17:06:29 +0000
commit5f004bcaee4cb552cf1b46a505f18f08777db7e5 (patch)
treec81bdd8e01ba8de9862c8bdb1b210559d4bcf154 /drivers/gpu/drm/msm/msm_iommu.c
parentRDMA/bnxt_re: Fix an IS_ERR() vs NULL check (diff)
parentLinux 6.4 (diff)
downloadkernel-5f004bcaee4cb552cf1b46a505f18f08777db7e5.tar.gz
kernel-5f004bcaee4cb552cf1b46a505f18f08777db7e5.zip
Merge tag 'v6.4' into rdma.git for-next
Linux 6.4 Resolve conflicts between rdma rc and next in rxe_cq matching linux-next: drivers/infiniband/sw/rxe/rxe_cq.c: https://lore.kernel.org/r/[email protected] Signed-off-by: Jason Gunthorpe <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/msm/msm_iommu.c')
-rw-r--r--drivers/gpu/drm/msm/msm_iommu.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/gpu/drm/msm/msm_iommu.c b/drivers/gpu/drm/msm/msm_iommu.c
index 418e1e06cdde..5cc8d358cc97 100644
--- a/drivers/gpu/drm/msm/msm_iommu.c
+++ b/drivers/gpu/drm/msm/msm_iommu.c
@@ -234,7 +234,12 @@ struct msm_mmu *msm_iommu_pagetable_create(struct msm_mmu *parent)
/* 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);
@@ -410,7 +415,7 @@ struct msm_mmu *msm_iommu_gpu_new(struct device *dev, struct msm_gpu *gpu, unsig
struct msm_mmu *mmu;
mmu = msm_iommu_new(dev, quirks);
- if (IS_ERR(mmu))
+ if (IS_ERR_OR_NULL(mmu))
return mmu;
iommu = to_msm_iommu(mmu);