This is a note to let you know that I've just added the patch titled
clk: fixed-mmio: make COMMON_CLK_FIXED_MMIO depend on HAS_IOMEM
to the 5.10-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:
clk-fixed-mmio-make-common_clk_fixed_mmio-depend-on-.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 5a65591e2144f233f5295b3409c7b2e2f635eb86
Author: Baoquan He <bhe@xxxxxxxxxx>
Date: Fri Jul 7 21:58:51 2023 +0800
clk: fixed-mmio: make COMMON_CLK_FIXED_MMIO depend on HAS_IOMEM
[ Upstream commit e7dd44f4f3166db45248414f5df8f615392de47a ]
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 COMMON_CLK_FIXED_MMIO depend on HAS_IOMEM so that it won't
be built to cause below compiling error if PCI is unset:
------
ld: drivers/clk/clk-fixed-mmio.o: in function `fixed_mmio_clk_setup':
clk-fixed-mmio.c:(.text+0x5e): undefined reference to `of_iomap'
ld: clk-fixed-mmio.c:(.text+0xba): undefined reference to `iounmap'
------
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: Michael Turquette <mturquette@xxxxxxxxxxxx>
Cc: Stephen Boyd <sboyd@xxxxxxxxxx>
Cc: linux-clk@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20230707135852.24292-8-bhe@xxxxxxxxxx
Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 4ae49eae45869..df739665f2063 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -356,6 +356,7 @@ config COMMON_CLK_BD718XX
config COMMON_CLK_FIXED_MMIO
bool "Clock driver for Memory Mapped Fixed values"
depends on COMMON_CLK && OF
+ depends on HAS_IOMEM
help
Support for Memory Mapped IO Fixed clocks
