> -----Original Message-----
> From: Wei Yongjun [mailto:[email protected]]
> Sent: Tuesday, December 4, 2018 2:26 PM
> To: Wolfgang Grandegger <[email protected]>; Marc Kleine-Budde
> <[email protected]>; Aisheng DONG <[email protected]>
> Cc: Wei Yongjun <[email protected]>; [email protected];
> [email protected]; [email protected]
> Subject: [PATCH net-next] can: flexcan: flexcan_chip_start(): fix the error 
> return
> code in flexcan_setup_stop_mode()
> 
> The error return code PTR_ERR(gpr_np) is always 0 since gpr_np is equal to
> NULL in this error handling case. Fix it by return -ENOENT.
> 
> Fixes: de3578c198c6 ("can: flexcan: add self wakeup support")
> Signed-off-by: Wei Yongjun <[email protected]>
> ---
>  drivers/net/can/flexcan.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index
> 0f36eaf..f412d84 100644
> --- a/drivers/net/can/flexcan.c
> +++ b/drivers/net/can/flexcan.c
> @@ -1432,7 +1432,7 @@ static int flexcan_setup_stop_mode(struct
> platform_device *pdev)
>       gpr_np = of_find_node_by_phandle(phandle);
>       if (!gpr_np) {
>               dev_dbg(&pdev->dev, "could not find gpr node by phandle\n");
> -             return PTR_ERR(gpr_np);
> +             return -ENOENT;

Good catch.

Reviewed-by: Dong Aisheng <[email protected]>

Regards
Dong Aisheng

>       }
> 
>       priv = netdev_priv(dev);
> 
> 

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