diff options
Diffstat (limited to 'kernel/dma/Kconfig')
| -rw-r--r-- | kernel/dma/Kconfig | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig index f4770fcfa62b..847a9d1fa634 100644 --- a/kernel/dma/Kconfig +++ b/kernel/dma/Kconfig @@ -1,5 +1,8 @@ # SPDX-License-Identifier: GPL-2.0-only +config NO_DMA + bool + config HAS_DMA bool depends on !NO_DMA @@ -186,11 +189,6 @@ config DMA_API_DEBUG drivers like double-freeing of DMA mappings or freeing mappings that were never allocated. - This also attempts to catch cases where a page owned by DMA is - accessed by the cpu in a way that could cause data corruption. For - example, this enables cow_user_page() to check that the source page is - not undergoing DMA. - This option causes a performance degradation. Use only if you want to debug device drivers and dma interactions. |