From: Arnd Bergmann <arnd@xxxxxxxx>
commit 994a04a20b03128838ec0250a0e266aab24d23f1 upstream.
32-bit processors cannot generally access 64-bit MMIO registers
atomically, and it is unknown in which order the two halves of
this registers would need to be read:
drivers/thermal/intel/int340x_thermal/processor_thermal_mbox.c: In function 'send_mbox_cmd':
drivers/thermal/intel/int340x_thermal/processor_thermal_mbox.c:79:37: error: implicit declaration of function 'readq'; did you mean 'readl'? [-Werror=implicit-function-declaration]
79 | *cmd_resp = readq((void __iomem *) (proc_priv->mmio_base + MBOX_OFFSET_DATA));
| ^~~~~
| readl
The driver already does not build for anything other than x86,
so limit it further to x86-64.
Fixes: aeb58c860dc5 ("thermal/drivers/int340x: processor_thermal: Suppot 64 bit RFIM responses")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
Reviewed-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Sumeet Pawnikar <sumeet.r.pawnikar@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/thermal/intel/int340x_thermal/Kconfig | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/thermal/intel/int340x_thermal/Kconfig
+++ b/drivers/thermal/intel/int340x_thermal/Kconfig
@@ -5,12 +5,12 @@
config INT340X_THERMAL
tristate "ACPI INT340X thermal drivers"
- depends on X86 && ACPI && PCI
+ depends on X86_64 && ACPI && PCI
select THERMAL_GOV_USER_SPACE
select ACPI_THERMAL_REL
select ACPI_FAN
select INTEL_SOC_DTS_IOSF_CORE
- select PROC_THERMAL_MMIO_RAPL if X86_64 && POWERCAP
+ select PROC_THERMAL_MMIO_RAPL if POWERCAP
help
Newer laptops and tablets that use ACPI may have thermal sensors and
other devices with thermal control capabilities outside the core
