6.5-stable review patch. If anyone has any objections, please let me know.
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From: Baoquan He bhe@redhat.com
[ Upstream commit aefc8b57af7787c80686e49a5841e9289cb11f53 ]
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 OPEN_DICE depend on HAS_IOMEM so that it won't be built to cause below compiling error if PCI is unset:
------ ERROR: modpost: "devm_memremap" [drivers/misc/open-dice.ko] undefined! ERROR: modpost: "devm_memunmap" [drivers/misc/open-dice.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: Derek Kiernan derek.kiernan@amd.com Cc: Dragan Cvetic dragan.cvetic@amd.com Cc: Arnd Bergmann arnd@arndb.de Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Link: https://lore.kernel.org/r/20230707135852.24292-4-bhe@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/misc/Kconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index 75e427f124b28..cadd4a820c033 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -496,6 +496,7 @@ config HISI_HIKEY_USB config OPEN_DICE tristate "Open Profile for DICE driver" depends on OF_RESERVED_MEM + depends on HAS_IOMEM help This driver exposes a DICE reserved memory region to userspace via a character device. The memory region contains Compound Device