Messages in this thread Patch in this message | | | From | Randy Dunlap <> | Subject | [PATCH 3/4] DMA: SF_PDMA depends on HAS_IOMEM | Date | Fri, 21 May 2021 19:13:12 -0700 |
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When CONFIG_HAS_IOMEM is not set/enabled, certain iomap() family functions [including ioremap(), devm_ioremap(), etc.] are not available. Drivers that use these functions should depend on HAS_IOMEM so that they do not cause build errors.
Mends this build error: s390-linux-ld: drivers/dma/sf-pdma/sf-pdma.o: in function `sf_pdma_probe': sf-pdma.c:(.text+0x1668): undefined reference to `devm_ioremap_resource'
Fixes: 6973886ad58e ("dmaengine: sf-pdma: add platform DMA support for HiFive Unleashed A00") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reported-by: kernel test robot <lkp@intel.com> Cc: Green Wan <green.wan@sifive.com> Cc: Vinod Koul <vkoul@kernel.org> Cc: dmaengine@vger.kernel.org --- drivers/dma/sf-pdma/Kconfig | 1 + 1 file changed, 1 insertion(+)
--- linux-next-20210521.orig/drivers/dma/sf-pdma/Kconfig +++ linux-next-20210521/drivers/dma/sf-pdma/Kconfig @@ -1,5 +1,6 @@ config SF_PDMA tristate "Sifive PDMA controller driver" + depends on HAS_IOMEM select DMA_ENGINE select DMA_VIRTUAL_CHANNELS help
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