linux-kernel - [PATCH] iommu/ipmmu-vmsa: Remove ipmmu_utlb

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Message-Id: <20230113185640.8050-1-joro@8bytes.org>
Date:   Fri, 13 Jan 2023 19:56:40 +0100
From:   Joerg Roedel <joro@...tes.org>
To:     Joerg Roedel <joro@...tes.org>
Cc:     Lu Baolu <baolu.lu@...ux.intel.com>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Vasant Hegde <vasant.hegde@....com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Sven Peter <sven@...npeter.dev>, iommu@...ts.linux.dev,
        linux-kernel@...r.kernel.org, Joerg Roedel <jroedel@...e.de>
Subject: [PATCH] iommu/ipmmu-vmsa: Remove ipmmu_utlb_disable()

From: Joerg Roedel <jroedel@...e.de>

The function is unused after commit 1b932ceddd19 ("iommu:
Remove detach_dev callbacks") and so compilation fails with

drivers/iommu/ipmmu-vmsa.c:305:13: error: ‘ipmmu_utlb_disable’ defined but not used [-Werror=unused-function]
  305 | static void ipmmu_utlb_disable(struct ipmmu_vmsa_domain *domain,
      |             ^~~~~~~~~~~~~~~~~~

Remove the function to fix the compile error.

Fixes: 1b932ceddd19 ("iommu: Remove detach_dev callbacks")
Signed-off-by: Joerg Roedel <jroedel@...e.de>
---
 drivers/iommu/ipmmu-vmsa.c | 12 ------------
 1 file changed, 12 deletions(-)

diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c
index 3112822ac7be..bdf1a4e5eae0 100644
--- a/drivers/iommu/ipmmu-vmsa.c
+++ b/drivers/iommu/ipmmu-vmsa.c
@@ -299,18 +299,6 @@ static void ipmmu_utlb_enable(struct ipmmu_vmsa_domain *domain,
 	mmu->utlb_ctx[utlb] = domain->context_id;
 }
 
-/*
- * Disable MMU translation for the microTLB.
- */
-static void ipmmu_utlb_disable(struct ipmmu_vmsa_domain *domain,
-			       unsigned int utlb)
-{
-	struct ipmmu_vmsa_device *mmu = domain->mmu;
-
-	ipmmu_imuctr_write(mmu, utlb, 0);
-	mmu->utlb_ctx[utlb] = IPMMU_CTX_INVALID;
-}
-
 static void ipmmu_tlb_flush_all(void *cookie)
 {
 	struct ipmmu_vmsa_domain *domain = cookie;
-- 
2.39.0