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.
Repairs this build error:
s390-linux-ld: drivers/dma/altera-msgdma.o: in function `request_and_map':
altera-msgdma.c:(.text+0x14b0): undefined reference to `devm_ioremap'
Fixes: a85c6f1b2921 ("dmaengine: Add driver for Altera / Intel mSGDMA IP core")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Cc: Stefan Roese <sr@xxxxxxx>
Cc: Vinod Koul <vkoul@xxxxxxxxxx>
Cc: dmaengine@xxxxxxxxxxxxxxx
---
drivers/dma/Kconfig | 1 +
1 file changed, 1 insertion(+)
--- linux-next-20210521.orig/drivers/dma/Kconfig
+++ linux-next-20210521/drivers/dma/Kconfig
@@ -59,6 +59,7 @@ config DMA_OF
#devices
config ALTERA_MSGDMA
tristate "Altera / Intel mSGDMA Engine"
+ depends on HAS_IOMEM
select DMA_ENGINE
help
Enable support for Altera / Intel mSGDMA controller.
