linux-kernel - [PATCH 03/25] iommu/vt-d: Remove unnecessary exported symbol

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Date:   Tue, 12 Jul 2022 08:08:46 +0800
From:   Lu Baolu <baolu.lu@...ux.intel.com>
To:     Joerg Roedel <joro@...tes.org>
Cc:     iommu@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: [PATCH 03/25] 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>
Reviewed-by: Christoph Hellwig <hch@....de>
Reviewed-by: Jason Gunthorpe <jgg@...dia.com>
Reviewed-by: Steve Wahl <steve.wahl@....com>
Link: https://lore.kernel.org/r/20220514014322.2927339-4-baolu.lu@linux.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 5fcf89faa31a..4ebf3c4da45e 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -787,7 +787,6 @@ 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 5c0dce78586a..6564af7ec0dd 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -314,9 +314,6 @@ 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);
-
 DEFINE_SPINLOCK(device_domain_lock);
 static LIST_HEAD(device_domain_list);
 
@@ -4093,9 +4090,6 @@ 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