On 2020-09-08 17:47, Christoph Hellwig wrote:
Driver that select DMA_OPS need to depend on HAS_DMA support to work. The vop driver was missing that dependency, so add it, and also add a nother depends in DMA_OPS itself. That won't fix the issue due to how the Kconfig dependencies work, but at least produce a warning about unmet dependencies. Signed-off-by: Christoph Hellwig <hch@xxxxxx> --- drivers/misc/mic/Kconfig | 1 + kernel/dma/Kconfig | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/misc/mic/Kconfig b/drivers/misc/mic/Kconfig index b9bb086785db48..8a7c2c5711d5f4 100644 --- a/drivers/misc/mic/Kconfig +++ b/drivers/misc/mic/Kconfig @@ -35,6 +35,7 @@ config SCIF_BUSconfig VOP_BUStristate "VOP Bus Driver" + depends on HAS_DMA select DMA_OPS
AFAICS all three of these bus drivers are only proxying a struct dma_map_ops * pointer around, so if they used the set_dma_ops() helper they shouldn't even need these selects at all. Only INTEL_MIC_HOST appears to have a logical dependency on DMA_OPS for actual functionality.
However, I have a vague feeling you might not be fond of those dma_ops helpers, and I have no great objection to this one-liner as-is, so (modulo the couple of commit message typos),
Reviewed-by: Robin Murphy <robin.murphy@xxxxxxx> (of course the hunk below is unquestionably OK) Robin.
help This option is selected by any driver which registers a diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig index 0ddfb5510fe45f..e7b801649f6574 100644 --- a/kernel/dma/Kconfig +++ b/kernel/dma/Kconfig @@ -9,6 +9,7 @@ config HAS_DMA default yconfig DMA_OPS+ depends on HAS_DMA bool#
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