Re: [PATCH] thermal: int340x: processor_thermal: Support shared interrupts

[Rafael J. Wysocki]

On Wed, Jun 19, 2024 at 6:44 AM Srinivas Pandruvada
<srinivas.pandruvada@xxxxxxxxxxxxxxx> wrote:
>
> On some systems the processor thermal device interrupt is shared with
> other PCI devices. In this case return IRQ_NONE from the interrupt
> handler when the interrupt is not for the processor thermal device.
>
> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
> Fixes: f0658708e863 ("thermal: int340x: processor_thermal: Use non MSI interrupts by default")
> Cc: <stable@xxxxxxxxxxxxxxx> # v6.7+
> ---
> This was only observed on a non production system. So not urgent.
>
>  .../intel/int340x_thermal/processor_thermal_device_pci.c       | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c
> index 14e34eabc419..4a1bfebb1b8e 100644
> --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c
> +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c
> @@ -150,7 +150,7 @@ static irqreturn_t proc_thermal_irq_handler(int irq, void *devid)
>  {
>         struct proc_thermal_pci *pci_info = devid;
>         struct proc_thermal_device *proc_priv;
> -       int ret = IRQ_HANDLED;
> +       int ret = IRQ_NONE;
>         u32 status;
>
>         proc_priv = pci_info->proc_priv;
> @@ -175,6 +175,7 @@ static irqreturn_t proc_thermal_irq_handler(int irq, void *devid)
>                 /* Disable enable interrupt flag */
>                 proc_thermal_mmio_write(pci_info, PROC_THERMAL_MMIO_INT_ENABLE_0, 0);
>                 pkg_thermal_schedule_work(&pci_info->work);
> +               ret = IRQ_HANDLED;
>         }
>
>         pci_write_config_byte(pci_info->pdev, 0xdc, 0x01);
> --

Applied as 6.10-rc material, thanks!