linux-kernel - [PATCH 2/2] iommu/vt-d: Remove unnecessary exported symbol

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Date:   Fri, 11 Feb 2022 11:05:31 +0800
From:   Lu Baolu <baolu.lu@...ux.intel.com>
To:     David Airlie <airlied@...ux.ie>, Joerg Roedel <joro@...tes.org>,
        Will Deacon <will@...nel.org>,
        Chris Wilson <chris@...is-wilson.co.uk>,
        Nathan Myers <ncm@...trip.org>
Cc:     Tvrtko Ursulin <tvrtko.ursulin@...el.com>,
        Lucas De Marchi <lucas.demarchi@...el.com>,
        Robin Murphy <robin.murphy@....com>,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        Lu Baolu <baolu.lu@...ux.intel.com>
Subject: [PATCH 2/2] iommu/vt-d: Remove unnecessary exported symbol

The exported symbol intel_iommu_gfx_mapped is not used anywhere in the
tree. Remove it to avoid dead code.

Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
---
 include/linux/intel-iommu.h | 1 -
 drivers/iommu/intel/iommu.c | 6 ------
 2 files changed, 7 deletions(-)

diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 2f8a4517c929..b8b8be58cb6b 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -789,7 +789,6 @@ extern int iommu_calculate_agaw(struct intel_iommu *iommu);
 extern int iommu_calculate_max_sagaw(struct intel_iommu *iommu);
 extern int dmar_disabled;
 extern int intel_iommu_enabled;
-extern int intel_iommu_gfx_mapped;
 #else
 static inline int iommu_calculate_agaw(struct intel_iommu *iommu)
 {
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index 4b06f2f365bd..88a53140c7f1 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -311,9 +311,6 @@ static int iommu_skip_te_disable;
 #define IDENTMAP_GFX		2
 #define IDENTMAP_AZALIA		4
 
-int intel_iommu_gfx_mapped;
-EXPORT_SYMBOL_GPL(intel_iommu_gfx_mapped);
-
 static DEFINE_XARRAY_ALLOC(device_domain_array);
 
 /* Convert device source ID into the index of device_domain_array. */
@@ -4070,9 +4067,6 @@ int __init intel_iommu_init(void)
 	if (list_empty(&dmar_satc_units))
 		pr_info("No SATC found\n");
 
-	if (dmar_map_gfx)
-		intel_iommu_gfx_mapped = 1;
-
 	init_no_remapping_devices();
 
 	ret = init_dmars();
-- 
2.25.1