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SubjectRe: [PATCH] iommu: SUN50I_IOMMU should depend on HAS_DMA
On 2020-06-30 11:09, Joerg Roedel wrote:
> On Mon, Jun 29, 2020 at 05:29:36PM +0100, Robin Murphy wrote:
>> On 2020-06-29 13:11, Geert Uytterhoeven wrote:
>>> If NO_DMA=y (e.g. Sun-3 all{mod,yes}-config):
>>> drivers/iommu/dma-iommu.o: In function `iommu_dma_mmap':
>>> dma-iommu.c:(.text+0x92e): undefined reference to `dma_pgprot'
>>> IOMMU_DMA must not be selected, unless HAS_DMA=y.
>> Wait, no, IOMMU_DMA should not be selected by drivers at all - it's for arch
>> code to choose.
> Okay, but that is a different fix, right? I queued this patch for v5.8
> for now.

If the driver didn't select IOMMU_DMA (completely unnecessarily, I might
add), there wouldn't be any problem to fix in the first place ;)


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