linux-kernel - [PATCH 01 of 14] x86: remove unused iommu_nr

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Date:	Tue, 16 Dec 2008 12:17:25 -0800
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org,
	Xen-devel <xen-devel@...ts.xensource.com>,
	the arch/x86 maintainers <x86@...nel.org>,
	Ian Campbell <ian.campbell@...rix.com>,
	Jan Beulich <jbeulich@...ell.com>,
	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Subject: [PATCH 01 of 14] x86: remove unused iommu_nr_pages

The last usage was removed by the patch set culminating in

commit e3c449f526cebb8d287241c7e82faafd9709668b
Author: Joerg Roedel <joerg.roedel@....com>
Date:   Wed Oct 15 22:02:11 2008 -0700

    x86, AMD IOMMU: convert driver to generic iommu_num_pages function

Signed-off-by: Ian Campbell <ian.campbell@...rix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>
Cc: Joerg Roedel <joerg.roedel@....com>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: linux-kernel@...r.kernel.orgdiff -r 9b89e3b4ca90 arch/x86/include/asm/iommu.h
---
 arch/x86/include/asm/iommu.h |    2 --
 arch/x86/kernel/pci-dma.c    |    7 -------
 2 files changed, 9 deletions(-)

diff --git a/arch/x86/include/asm/iommu.h b/arch/x86/include/asm/iommu.h
--- a/arch/x86/include/asm/iommu.h
+++ b/arch/x86/include/asm/iommu.h
@@ -7,8 +7,6 @@
 extern int force_iommu, no_iommu;
 extern int iommu_detected;
 
-extern unsigned long iommu_nr_pages(unsigned long addr, unsigned long len);
-
 /* 10 seconds */
 #define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000)
 
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -121,13 +121,6 @@
 	pci_swiotlb_init();
 }
 
-unsigned long iommu_nr_pages(unsigned long addr, unsigned long len)
-{
-	unsigned long size = roundup((addr & ~PAGE_MASK) + len, PAGE_SIZE);
-
-	return size >> PAGE_SHIFT;
-}
-EXPORT_SYMBOL(iommu_nr_pages);
 #endif
 
 void *dma_generic_alloc_coherent(struct device *dev, size_t size,


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