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| author | Christoph Hellwig <hch@lst.de> | 2018-03-23 18:49:30 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-03-23 20:15:38 +0100 |
| commit | 0803e6051c1562e1525c3e044313390bf8b35c2b (patch) | |
| tree | 3dfff08cbfc30eac2e23d072db590a394a952269 /lib | |
| parent | 16e73adbca76fd18733278cb688b0ddb4cad162c (diff) | |
| download | linux-0803e6051c1562e1525c3e044313390bf8b35c2b.tar.gz linux-0803e6051c1562e1525c3e044313390bf8b35c2b.tar.bz2 linux-0803e6051c1562e1525c3e044313390bf8b35c2b.zip | |
swiotlb: Make swiotlb_{alloc,free}_buffer depend on CONFIG_DMA_DIRECT_OPS
Otherwise this causes unused symbol warnings for configs that build
swiotlb.c only for use by xen-swiotlb.c and that don't otherwise select
CONFIG_DMA_DIRECT_OPS, which is possible on arm.
Fixes: 16e73adbca76 ("dma/swiotlb: Remove swiotlb_{alloc,free}_coherent()")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: iommu@lists.linux-foundation.org
Cc: konrad.wilk@oracle.com
Link: https://lkml.kernel.org/r/20180323174930.17767-1-hch@lst.de
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/swiotlb.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 15954b86f09e..47aeb04c1997 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -692,6 +692,7 @@ void swiotlb_tbl_sync_single(struct device *hwdev, phys_addr_t tlb_addr, } } +#ifdef CONFIG_DMA_DIRECT_OPS static inline bool dma_coherent_ok(struct device *dev, dma_addr_t addr, size_t size) { @@ -763,6 +764,7 @@ static bool swiotlb_free_buffer(struct device *dev, size_t size, DMA_ATTR_SKIP_CPU_SYNC); return true; } +#endif static void swiotlb_full(struct device *dev, size_t size, enum dma_data_direction dir, |