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[PATCH 12/67] s390: remove the unused dma_capable helper

To: iommu@lists.linux-foundation.org
Subject: [PATCH 12/67] s390: remove the unused dma_capable helper
From: Christoph Hellwig <hch@lst.de>
Date: Fri, 29 Dec 2017 09:18:16 +0100
Cc: linux-alpha@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, adi-buildroot-devel@lists.sourceforge.net, linux-c6x-dev@linux-c6x.org, linux-cris-kernel@axis.com, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-metag@vger.kernel.org, Michal Simek <monstr@monstr.eu>, linux-mips@linux-mips.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, patches@groups.riscv.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, Guan Xuetao <gxt@mprc.pku.edu.cn>, x86@kernel.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org
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Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 arch/s390/include/asm/dma-mapping.h | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/arch/s390/include/asm/dma-mapping.h 
b/arch/s390/include/asm/dma-mapping.h
index eaf490f9c5bc..2ec7240c1ada 100644
--- a/arch/s390/include/asm/dma-mapping.h
+++ b/arch/s390/include/asm/dma-mapping.h
@@ -16,11 +16,4 @@ static inline const struct dma_map_ops 
*get_arch_dma_ops(struct bus_type *bus)
        return &dma_noop_ops;
 }
 
-static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t 
size)
-{
-       if (!dev->dma_mask)
-               return false;
-       return addr + size - 1 <= *dev->dma_mask;
-}
-
 #endif /* _ASM_S390_DMA_MAPPING_H */
-- 
2.14.2


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