[PATCH] peci: fix error check return value of platform_get_irq()

[Winiarska, Iwona]

On Tue, 2022-04-12 at 09:01 +0000, cgel.zte at gmail.com wrote:
> From: Lv Ruyi <lv.ruyi at zte.com.cn>

Thanks for the fix. Can we prefix the subject with "peci: aspeed:"? Just to
distinguish changes related to specific controller from the ones touching peci-
core.

> 
> platform_get_irq() return negative value on failure, so null check of
> priv->irq is incorrect. Fix it by comparing whether it is less than zero.
> 
> Fixes: a85e4c52086c ("peci: Add peci-aspeed controller driver")
> Reported-by: Zeal Robot <zealci at zte.com.cn>
> Signed-off-by: Lv Ruyi <lv.ruyi at zte.com.cn>

Reviewed-by: Iwona Winiarska <iwona.winiarska at intel.com>

-Iwona

> ---
>  drivers/peci/controller/peci-aspeed.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/peci/controller/peci-aspeed.c
> b/drivers/peci/controller/peci-aspeed.c
> index 1925ddc13f00..731c5d8f75c6 100644
> --- a/drivers/peci/controller/peci-aspeed.c
> +++ b/drivers/peci/controller/peci-aspeed.c
> @@ -523,7 +523,7 @@ static int aspeed_peci_probe(struct platform_device *pdev)
>                 return PTR_ERR(priv->base);
>  
>         priv->irq = platform_get_irq(pdev, 0);
> -       if (!priv->irq)
> +       if (priv->irq < 0)
>                 return priv->irq;
>  
>         ret = devm_request_irq(&pdev->dev, priv->irq, aspeed_peci_irq_handler,