This is a note to let you know that I've just added the patch titled
misc: open-dice: make OPEN_DICE depend on HAS_IOMEM
to the 6.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
misc-open-dice-make-open_dice-depend-on-has_iomem.patch
and it can be found in the queue-6.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 63694d090b26fc6c4146bc75a8ec4dd4068d8be4
Author: Baoquan He <bhe@xxxxxxxxxx>
Date: Fri Jul 7 21:58:47 2023 +0800
misc: open-dice: make OPEN_DICE depend on HAS_IOMEM
[ 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@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202306211329.ticOJCSv-lkp@xxxxxxxxx/
Signed-off-by: Baoquan He <bhe@xxxxxxxxxx>
Cc: Derek Kiernan <derek.kiernan@xxxxxxx>
Cc: Dragan Cvetic <dragan.cvetic@xxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230707135852.24292-4-bhe@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
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
