Re: [PATCH] thermal/drivers/int340x: limit Kconfig to 64-bit
From: Rafael J. Wysocki
Date: Tue Nov 16 2021 - 14:18:13 EST
On Mon, Nov 8, 2021 at 12:13 PM Arnd Bergmann <arnd@xxxxxxxxxx> wrote:
>
> From: Arnd Bergmann <arnd@xxxxxxxx>
>
> 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>
> ---
> drivers/thermal/intel/int340x_thermal/Kconfig | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/thermal/intel/int340x_thermal/Kconfig b/drivers/thermal/intel/int340x_thermal/Kconfig
> index 45c31f3d6054..5d046de96a5d 100644
> --- 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
> --
Applied as 5.16-rc2 material, thanks!