thermal: int340x: Limit Kconfig to 64-bit

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@arndb.de>
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sumeet Pawnikar <sumeet.r.pawnikar@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/thermal/intel/int340x_thermal/Kconfig b/drivers/thermal/intel/int340x_thermal/Kconfig
index 45c31f3..5d046de 100644 (file)
--- 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