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    Subject[PATCH 4.14 18/88] dmaengine: ALTERA_MSGDMA depends on HAS_IOMEM
    Date
    From: Randy Dunlap <rdunlap@infradead.org>

    [ Upstream commit 253697b93c2a1c237d34d3ae326e394aeb0ca7b3 ]

    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@infradead.org>
    Reported-by: kernel test robot <lkp@intel.com>
    Cc: Stefan Roese <sr@denx.de>
    Cc: Vinod Koul <vkoul@kernel.org>
    Cc: dmaengine@vger.kernel.org
    Reviewed-by: Stefan Roese <sr@denx.de>
    Phone: (+49)-8142-66989-51 Fax: (+49)-8142-66989-80 Email: sr@denx.de
    Link: https://lore.kernel.org/r/20210522021313.16405-2-rdunlap@infradead.org
    Signed-off-by: Vinod Koul <vkoul@kernel.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/dma/Kconfig | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
    index 79b809dbfda0..ff69feefc1c6 100644
    --- a/drivers/dma/Kconfig
    +++ b/drivers/dma/Kconfig
    @@ -58,6 +58,7 @@ 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.
    --
    2.30.2
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