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From: "Maíra Canal via iommu" <iommu@lists.linux-foundation.org>
To: dwmw2@infradead.org, baolu.lu@linux.intel.com, joro@8bytes.org,
	will@kernel.org, nathan@kernel.org, ndesaulniers@google.com
Cc: iommu@lists.linux-foundation.org, llvm@lists.linux.dev,
	linux-kernel@vger.kernel.org
Subject: [PATCH] iommu/vt-d: Remove unused dma_to_mm_pfn function
Date: Sun, 7 Nov 2021 19:53:32 -0300	[thread overview]
Message-ID: <YYhY7GqlrcTZlzuA@fedora> (raw)

Remove dma_to_buf_pfn function, which is not used in the codebase.

This was pointed by clang with the following warning:

drivers/iommu/intel/iommu.c:136:29: warning: unused function
'dma_to_mm_pfn' [-Wunused-function]
static inline unsigned long dma_to_mm_pfn(unsigned long dma_pfn)
                            ^

Signed-off-by: Maíra Canal <maira.canal@usp.br>
---
 drivers/iommu/intel/iommu.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index 0bde0c8b4126..35300b5b69f7 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -133,11 +133,6 @@ static inline unsigned long lvl_to_nr_pages(unsigned int lvl)
 
 /* VT-d pages must always be _smaller_ than MM pages. Otherwise things
    are never going to work. */
-static inline unsigned long dma_to_mm_pfn(unsigned long dma_pfn)
-{
-	return dma_pfn >> (PAGE_SHIFT - VTD_PAGE_SHIFT);
-}
-
 static inline unsigned long mm_to_dma_pfn(unsigned long mm_pfn)
 {
 	return mm_pfn << (PAGE_SHIFT - VTD_PAGE_SHIFT);
-- 
2.31.1

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WARNING: multiple messages have this Message-ID (diff)
From: "Maíra Canal" <maira.canal@usp.br>
To: dwmw2@infradead.org, baolu.lu@linux.intel.com, joro@8bytes.org,
	will@kernel.org, nathan@kernel.org, ndesaulniers@google.com
Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
	llvm@lists.linux.dev
Subject: [PATCH] iommu/vt-d: Remove unused dma_to_mm_pfn function
Date: Sun, 7 Nov 2021 19:53:32 -0300	[thread overview]
Message-ID: <YYhY7GqlrcTZlzuA@fedora> (raw)

Remove dma_to_buf_pfn function, which is not used in the codebase.

This was pointed by clang with the following warning:

drivers/iommu/intel/iommu.c:136:29: warning: unused function
'dma_to_mm_pfn' [-Wunused-function]
static inline unsigned long dma_to_mm_pfn(unsigned long dma_pfn)
                            ^

Signed-off-by: Maíra Canal <maira.canal@usp.br>
---
 drivers/iommu/intel/iommu.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index 0bde0c8b4126..35300b5b69f7 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -133,11 +133,6 @@ static inline unsigned long lvl_to_nr_pages(unsigned int lvl)
 
 /* VT-d pages must always be _smaller_ than MM pages. Otherwise things
    are never going to work. */
-static inline unsigned long dma_to_mm_pfn(unsigned long dma_pfn)
-{
-	return dma_pfn >> (PAGE_SHIFT - VTD_PAGE_SHIFT);
-}
-
 static inline unsigned long mm_to_dma_pfn(unsigned long mm_pfn)
 {
 	return mm_pfn << (PAGE_SHIFT - VTD_PAGE_SHIFT);
-- 
2.31.1


             reply	other threads:[~2021-11-08  3:08 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-07 22:53 Maíra Canal via iommu [this message]
2021-11-07 22:53 ` [PATCH] iommu/vt-d: Remove unused dma_to_mm_pfn function Maíra Canal
2021-11-10 20:19 ` Nick Desaulniers via iommu
2021-11-10 20:19   ` Nick Desaulniers

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