linux-kernel - Re: [PATCH] usb: dwc3: remove dead code in dwc3_otg_get

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Date:   Fri, 24 Mar 2023 18:28:56 +0000
From:   Thinh Nguyen <Thinh.Nguyen@...opsys.com>
To:     lihuya <lihuya@...t.edu.cn>
CC:     Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "dzm91@...t.edu.cn" <dzm91@...t.edu.cn>,
        "hust-os-kernel-patches@...glegroups.com" 
        <hust-os-kernel-patches@...glegroups.com>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] usb: dwc3: remove dead code in dwc3_otg_get_irq

On Thu, Mar 23, 2023, lihuya wrote:
> platform_get_irq() only return non-zero irq number on success, or
> negative error number on failure.
> 
> There is no need to check the return value of platform_get_irq()
> to determine the return value of dwc3_otg_get_irq(), removing
> them to solve this problem.
> 
> Signed-off-by: lihuya <lihuya@...t.edu.cn>
> ---
>  drivers/usb/dwc3/drd.c | 5 -----
>  1 file changed, 5 deletions(-)
> 
> diff --git a/drivers/usb/dwc3/drd.c b/drivers/usb/dwc3/drd.c
> index 039bf241769a..c2e09700212d 100644
> --- a/drivers/usb/dwc3/drd.c
> +++ b/drivers/usb/dwc3/drd.c
> @@ -154,11 +154,6 @@ static int dwc3_otg_get_irq(struct dwc3 *dwc)
>  		goto out;
>  
>  	irq = platform_get_irq(dwc3_pdev, 0);
> -	if (irq > 0)
> -		goto out;
> -
> -	if (!irq)
> -		irq = -EINVAL;
>  
>  out:
>  	return irq;
> -- 
> 2.34.1
> 

Acked-by: Thinh Nguyen <Thinh.Nguyen@...opsys.com>

Thanks,
Thinh