| Message ID | 20230401091531.47412-2-jiaxun.yang@flygoat.com |
|---|---|
| State | Accepted |
| Commit | fe4e5efa401fe15eab9259e358730145449e83a2 |
| Headers | show |
| Series | [v4,1/3] dma-mapping: Provide a fallback dma_default_coherent | expand |
diff --git a/include/linux/dma-map-ops.h b/include/linux/dma-map-ops.h index 41bf4bdb117a..31f114f486c4 100644 --- a/include/linux/dma-map-ops.h +++ b/include/linux/dma-map-ops.h @@ -269,6 +269,8 @@ static inline bool dev_is_dma_coherent(struct device *dev) return dev->dma_coherent; } #else +#define dma_default_coherent true + static inline bool dev_is_dma_coherent(struct device *dev) { return true; diff --git a/kernel/dma/mapping.c b/kernel/dma/mapping.c index 68106e3791f6..80f9663ffe26 100644 --- a/kernel/dma/mapping.c +++ b/kernel/dma/mapping.c @@ -17,7 +17,11 @@ #include "debug.h" #include "direct.h" +#if defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE) || \ + defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU) || \ + defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL) bool dma_default_coherent; +#endif /* * Managed DMA API
dma_default_coherent was decleared unconditionally at kernel/dma/mapping.c but only decleared when any of non-coherent options is enabled in dma-map-ops.h. Guard the declaration in mapping.c with non-coherent options and provide a fallback definition. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> --- v3: Style fix --- include/linux/dma-map-ops.h | 2 ++ kernel/dma/mapping.c | 4 ++++ 2 files changed, 6 insertions(+)