linux-kernel - Re: [PATCH v2] NTB: Fix an error code in ntb_msit

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Date:   Mon, 7 Jun 2021 09:51:29 -0600
From:   Logan Gunthorpe <logang@...tatee.com>
To:     Yang Li <yang.lee@...ux.alibaba.com>, jdmason@...zu.us
Cc:     dave.jiang@...el.com, allenbh@...il.com,
        linux-ntb@...glegroups.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] NTB: Fix an error code in ntb_msit_probe()



On 2021-06-06 11:56 p.m., Yang Li wrote:
> When the value of nm->isr_ctx is false, the value of ret is 0.
> So, we set ret to -ENOMEM to indicate this error.
> 
> Clean up smatch warning:
> drivers/ntb/test/ntb_msi_test.c:373 ntb_msit_probe() warn: missing
> error code 'ret'.
> 
> Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
> Signed-off-by: Yang Li <yang.lee@...ux.alibaba.com>

Thanks!

Reviewed-by: Logan Gunthorpe <logang@...tatee.com>

> ---
> 
> Change in v2:
> --revise typo
> 
>  drivers/ntb/test/ntb_msi_test.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/ntb/test/ntb_msi_test.c b/drivers/ntb/test/ntb_msi_test.c
> index 7095ecd..4e18e08 100644
> --- a/drivers/ntb/test/ntb_msi_test.c
> +++ b/drivers/ntb/test/ntb_msi_test.c
> @@ -369,8 +369,10 @@ static int ntb_msit_probe(struct ntb_client *client, struct ntb_dev *ntb)
>  	if (ret)
>  		goto remove_dbgfs;
>  
> -	if (!nm->isr_ctx)
> +	if (!nm->isr_ctx) {
> +		ret = -ENOMEM;
>  		goto remove_dbgfs;
> +	}
>  
>  	ntb_link_enable(ntb, NTB_SPEED_AUTO, NTB_WIDTH_AUTO);
>  
>