diff options
Diffstat (limited to 'kernel/dma/direct.c')
| -rw-r--r-- | kernel/dma/direct.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c index 9657ef7c055e..ed3056eb20b8 100644 --- a/kernel/dma/direct.c +++ b/kernel/dma/direct.c @@ -240,8 +240,10 @@ void *dma_direct_alloc(struct device *dev, size_t size, */ set_uncached = IS_ENABLED(CONFIG_ARCH_HAS_DMA_SET_UNCACHED); remap = IS_ENABLED(CONFIG_DMA_DIRECT_REMAP); - if (!set_uncached && !remap) + if (!set_uncached && !remap) { + pr_warn_once("coherent DMA allocations not supported on this platform.\n"); return NULL; + } } /* |