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From:   Baoquan He <bhe@redhat.com>
To:     linux-kernel@vger.kernel.org
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        kernel test robot <lkp@intel.com>
Subject: [PATCH 0/8] Make several Kconfig options depend on HAS_IOMEM
Date:   Fri,  7 Jul 2023 21:58:44 +0800
Message-Id: <20230707135852.24292-1-bhe@redhat.com>
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In thread of one patch posting, LKP test robot reported some compiling
errors, paste the LKP report link here: 

https://lore.kernel.org/all/202306211329.ticOJCSv-lkp@intel.com/T/#u

In the config file, several Kconfig options are like below:
------
'# CONFIG_PCI is not set'
CONFIG_OF_EARLY_FLATTREE=y
CONFIG_DMA_DECLARE_COHERENT=y
------

The reason is (words arranged from Niklas):
===
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.

So make several Kconfig options depend on HAS_IOMEM so that it won't
build in those driver code if PCI is unset.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202306211329.ticOJCSv-lkp@intel.com/

Baoquan He (8):
  idmaengine: make FSL_EDMA and INTEL_IDMA64 depends on HAS_IOMEM
  char: xillybus: make XILLYBUS_OF depend on HAS_IOMEM
  misc: open-dice: make OPEN_DICE depend on HAS_IOMEM
  pcmcia : make PCMCIA depend on HAS_IOMEM
  net: altera-tse: make ALTERA_TSE depend on HAS_IOMEM
  irqchip/al-fic: make AL_FIC depend on HAS_IOMEM
  clk: fixed-mmio: make COMMON_CLK_FIXED_MMIO depend on HAS_IOMEM
  of: make OF_EARLY_FLATTREE depend on HAS_IOMEM

 drivers/char/xillybus/Kconfig       | 2 +-
 drivers/clk/Kconfig                 | 1 +
 drivers/dma/Kconfig                 | 2 ++
 drivers/irqchip/Kconfig             | 1 +
 drivers/misc/Kconfig                | 1 +
 drivers/net/ethernet/altera/Kconfig | 1 +
 drivers/of/Kconfig                  | 2 +-
 drivers/pcmcia/Kconfig              | 1 +
 8 files changed, 9 insertions(+), 2 deletions(-)

-- 
2.34.1