[PATCH] spi: spi-fsl-dspi: fix DMA mapping

[Michael Walle]

Am 2020-03-10 08:33, schrieb Michael Walle:
> Use the correct device to request the DMA mapping. Otherwise the IOMMU
> doesn't get the mapping and it will generate a page fault.
> 
> The error messages look like:
> [    3.008452] arm-smmu 5000000.iommu: Unhandled context fault:
> fsr=0x402, iova=0xf9800000, fsynr=0x3f0022, cbfrsynra=0x828, cb=8
> [    3.020123] arm-smmu 5000000.iommu: Unhandled context fault:
> fsr=0x402, iova=0xf9800000, fsynr=0x3f0022, cbfrsynra=0x828, cb=8
> 
> This was tested on a custom board with a LS1028A SoC.

Oh fu.. please disregard this patch. DMA mapping still isn't working.
Somehow I missed that the transfer mode was turned back to its default
XSPI mode.

-michael