diff options
| author | Andrey Smirnov <[email protected]> | 2016-09-28 15:22:33 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2016-09-28 16:19:01 -0700 |
| commit | 2481366afd71a0c0b7cd725e6750c04cf589673b (patch) | |
| tree | bddefbe87e77de1c6d7d5d6e77ea85155973b45e | |
| parent | 5b398e416e880159fe55eefd93c6588fa072cd66 (diff) | |
dma-mapping.h: preserve unmap info for CONFIG_DMA_API_DEBUG
When CONFIG_DMA_API_DEBUG is enabled we need to preserve unmapping address
even if "unmap" is a no-op for our architecutre because we need
debug_dma_unmap_page() to correctly cleanup all of the debug bookkeeping.
Failing to do so results in a false positive warnings about previously
mapped areas never being unmapped.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Andrey Smirnov <[email protected]>
Reviewed-by: Robin Murphy <[email protected]>
Cc: Joerg Roedel <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Zhen Lei <[email protected]>
Cc: "Luis R. Rodriguez" <[email protected]>
Cc: Christian Borntraeger <[email protected]>
Cc: Geliang Tang <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | include/linux/dma-mapping.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 66533e18276c..dc69df04abc1 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -718,7 +718,7 @@ static inline int dma_mmap_wc(struct device *dev, #define dma_mmap_writecombine dma_mmap_wc #endif -#ifdef CONFIG_NEED_DMA_MAP_STATE +#if defined(CONFIG_NEED_DMA_MAP_STATE) || defined(CONFIG_DMA_API_DEBUG) #define DEFINE_DMA_UNMAP_ADDR(ADDR_NAME) dma_addr_t ADDR_NAME #define DEFINE_DMA_UNMAP_LEN(LEN_NAME) __u32 LEN_NAME #define dma_unmap_addr(PTR, ADDR_NAME) ((PTR)->ADDR_NAME) |