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powercap: intel_rapl: Fix CONFIG_IOSF_MBI dependency

Message ID 20230606140000.385223-1-rui.zhang@intel.com
State Accepted
Commit 4658fe81b3f8afe8adf37734ec5fe595d90415c6
Headers show
Series powercap: intel_rapl: Fix CONFIG_IOSF_MBI dependency | expand

Commit Message

Zhang, Rui June 6, 2023, 2 p.m. UTC
After commit 3382388d7148 ("intel_rapl: abstract RAPL common code"),
accessing to IOSF_MBI interface is done in the RAPL common code.

Thus it is the CONFIG_INTEL_RAPL_CORE that has dependency of
CONFIG_IOSF_MBI, while CONFIG_INTEL_RAPL_MSR does not.

This problem was not exposed previously because all the previous RAPL
common code users, aka, the RAPL MSR and MMIO I/F drivers, have
CONFIG_IOSF_MBI selected.

Fix the CONFIG_IOSF_MBI dependency in RAPL code. This also fixes a build
time failure when the RAPL TPMI I/F driver is introduced without
selecting CONFIG_IOSF_MBI.

x86_64-linux-ld: vmlinux.o: in function `set_floor_freq_atom':
intel_rapl_common.c:(.text+0x2dac9b8): undefined reference to `iosf_mbi_write'
x86_64-linux-ld: intel_rapl_common.c:(.text+0x2daca66): undefined reference to `iosf_mbi_read'

Reference to iosf_mbi.h is also removed from the RAPL MSR I/F driver.

Fixes: 3382388d7148 ("intel_rapl: abstract RAPL common code")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/all/20230601213246.3271412-1-arnd@kernel.org
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
---
 drivers/powercap/Kconfig          | 4 +++-
 drivers/powercap/intel_rapl_msr.c | 1 -
 2 files changed, 3 insertions(+), 2 deletions(-)

Comments

Rafael J. Wysocki June 12, 2023, 5:50 p.m. UTC | #1
On Wed, Jun 7, 2023 at 4:23 AM Zhang, Rui <rui.zhang@intel.com> wrote:
>
> On Tue, 2023-06-06 at 23:45 +0800, kernel test robot wrote:
> > Hi Zhang,
> >
> > kernel test robot noticed the following build errors:
> >
> > [auto build test ERROR on rafael-pm/linux-next]
> > [also build test ERROR on next-20230606]
> > [cannot apply to linus/master v6.4-rc5]
> > [If your patch is applied to the wrong git tree, kindly drop us a
> > note.
> > And when submitting patch, we suggest to use '--base' as documented
> > in
> > https://git-scm.com/docs/git-format-patch#_base_tree_information]
> >
> > url:
> > https://github.com/intel-lab-lkp/linux/commits/Zhang-Rui/powercap-intel_rapl-Fix-CONFIG_IOSF_MBI-dependency/20230606-220222
>
> This is a false alarm from the robot.
> It applied Arnd' patch first and then applied this patch on top.
>
> I think we can ignore the lkp robot warnings for this thread.

OK

Applied as 6.5 material, thanks!
diff mbox series

Patch

diff --git a/drivers/powercap/Kconfig b/drivers/powercap/Kconfig
index 90d33cd1b670..b063f7511773 100644
--- a/drivers/powercap/Kconfig
+++ b/drivers/powercap/Kconfig
@@ -18,10 +18,12 @@  if POWERCAP
 # Client driver configurations go here.
 config INTEL_RAPL_CORE
 	tristate
+	depends on PCI
+	select IOSF_MBI
 
 config INTEL_RAPL
 	tristate "Intel RAPL Support via MSR Interface"
-	depends on X86 && IOSF_MBI
+	depends on X86 && PCI
 	select INTEL_RAPL_CORE
 	help
 	  This enables support for the Intel Running Average Power Limit (RAPL)
diff --git a/drivers/powercap/intel_rapl_msr.c b/drivers/powercap/intel_rapl_msr.c
index a27673706c3d..be118d46f32e 100644
--- a/drivers/powercap/intel_rapl_msr.c
+++ b/drivers/powercap/intel_rapl_msr.c
@@ -22,7 +22,6 @@ 
 #include <linux/processor.h>
 #include <linux/platform_device.h>
 
-#include <asm/iosf_mbi.h>
 #include <asm/cpu_device_id.h>
 #include <asm/intel-family.h>