[PATCH 5.10 052/406] idmaengine: make FSL_EDMA and INTEL_IDMA64 depends on HAS_IOMEM

Greg Kroah-Hartman
2023-09-17T19:22:35Z

From: Baoquan He <bhe@redhat.com>

[ Upstream commit b1e213a9e31c20206f111ec664afcf31cbfe0dbb ]

On s390 systems (aka mainframes), it has classic channel devices for
networking and permanent storage that are currently even more common
than PCI devices. Hence it could have a fully functional s390 kernel
with CONFIG_PCI=n, then the relevant iomem mapping functions
[including ioremap(), devm_ioremap(), etc.] are not available.

Here let FSL_EDMA and INTEL_IDMA64 depend on HAS_IOMEM so that it
won't be built to cause below compiling error if PCI is unset.

--------
ERROR: modpost: "devm_platform_ioremap_resource" [drivers/dma/fsl-edma.ko] undefined!
ERROR: modpost: "devm_platform_ioremap_resource" [drivers/dma/idma64.ko] undefined!
--------

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202306211329.ticOJCSv-lkp@intel.com/
Signed-off-by: Baoquan He <bhe@redhat.com>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: dmaengine@vger.kernel.org
Link: https://lore.kernel.org/r/20230707135852.24292-2-bhe@redhat.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/dma/Kconfig | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index 08013345d1f24..7e1bd79fbee8f 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -208,6 +208,7 @@ config FSL_DMA
config FSL_EDMA
tristate "Freescale eDMA engine support"
depends on OF
+ depends on HAS_IOMEM
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
@@ -277,6 +278,7 @@ config IMX_SDMA

config INTEL_IDMA64
tristate "Intel integrated DMA 64-bit support"
+ depends on HAS_IOMEM
select DMA_ENGINE
select DMA_VIRTUAL_CHANNELS
help
--
2.40.1