linux-kernel - [PATCH] iommu/vt-d: drop unused cap_super

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Message-ID: <20250913015024.81186-1-yury.norov@gmail.com>
Date: Fri, 12 Sep 2025 21:50:23 -0400
From: "Yury Norov (NVIDIA)" <yury.norov@...il.com>
To: David Woodhouse <dwmw2@...radead.org>,
	Lu Baolu <baolu.lu@...ux.intel.com>,
	Joerg Roedel <joro@...tes.org>,
	Will Deacon <will@...nel.org>,
	Robin Murphy <robin.murphy@....com>,
	iommu@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Cc: "Yury Norov (NVIDIA)" <yury.norov@...il.com>
Subject: [PATCH] iommu/vt-d: drop unused cap_super_offset()

The macro is unused. Drop the dead code.

Signed-off-by: Yury Norov (NVIDIA) <yury.norov@...il.com>
---
 drivers/iommu/intel/iommu.h | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/iommu/intel/iommu.h b/drivers/iommu/intel/iommu.h
index d09b92871659..7da1cf88ce80 100644
--- a/drivers/iommu/intel/iommu.h
+++ b/drivers/iommu/intel/iommu.h
@@ -173,8 +173,6 @@
 #define cap_pgsel_inv(c)	(((c) >> 39) & 1)
 
 #define cap_super_page_val(c)	(((c) >> 34) & 0xf)
-#define cap_super_offset(c)	(((find_first_bit(&cap_super_page_val(c), 4)) \
-					* OFFSET_STRIDE) + 21)
 
 #define cap_fault_reg_offset(c)	((((c) >> 24) & 0x3ff) * 16)
 #define cap_max_fault_reg_offset(c) \
-- 
2.43.0