[PATCH v2] i2c: spacemit: fix spurious IRQ handling returning IRQ_HANDLED

[Mukesh Savaliya]

On 7/10/2026 12:51 PM, Pei Xiao wrote:
> When the interrupt status register reads zero, the handler should
> return IRQ_NONE instead of IRQ_HANDLED. What the return value
> actually feeds into is the spurious interrupt accounting in
> note_interrupt(): falsely claiming IRQ_HANDLED defeats the "irq XX:
note_interrupt() ? You mean to say No interrupt OR invalid interrupt 
here ? I could not understand function name.
> nobody cared" detection, so a stuck interrupt source would never be
> caught.
> 
> Fixes: 5ea558473fa3 ("i2c: spacemit: add support for SpacemiT K1 SoC")
> Signed-off-by: Pei Xiao <xiaopei01 at kylinos.cn>
> ---
> changlog in v2:
> modify gitlog for Modify the incorrect Git commit message to match the reason for the modification.
> ---
>   drivers/i2c/busses/i2c-k1.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/i2c/busses/i2c-k1.c b/drivers/i2c/busses/i2c-k1.c
> index c2d090f6ba80..487f23fde725 100644
> --- a/drivers/i2c/busses/i2c-k1.c
> +++ b/drivers/i2c/busses/i2c-k1.c
> @@ -728,7 +728,7 @@ static irqreturn_t spacemit_i2c_irq_handler(int irq, void *devid)
>   
>   	status = readl(i2c->base + SPACEMIT_ISR);
>   	if (!status)
> -		return IRQ_HANDLED;
> +		return IRQ_NONE;
>   
>   	i2c->status = status;
>