linux-kernel - Re: [PATCH 1/3] net: usb: cdc_ncm: emit dev

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Message-ID: <CANEJEGusskCzMzP-VEbTyk2zfH+tQjHO8JpncVtufnw__2mx6A@mail.gmail.com>
Date:   Mon, 18 Jan 2021 22:01:15 +0000
From:   Grant Grundler <grundler@...omium.org>
To:     Grant Grundler <grundler@...omium.org>,
        nic_swsd <nic_swsd@...ltek.com>
Cc:     Oliver Neukum <oliver@...kum.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, netdev <netdev@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] net: usb: cdc_ncm: emit dev_err on error paths

+nic_swsd [adding per Realtek developer team request]

On Sat, Jan 16, 2021 at 5:26 AM Grant Grundler <grundler@...omium.org> wrote:
>
> Several error paths in bind/probe code will only emit
> output using dev_dbg. But if we are going to fail the
> bind/probe, emit related output with "err" priority.
>
> Signed-off-by: Grant Grundler <grundler@...omium.org>
> ---
>  drivers/net/usb/cdc_ncm.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
> index 5a78848db93f..25498c311551 100644
> --- a/drivers/net/usb/cdc_ncm.c
> +++ b/drivers/net/usb/cdc_ncm.c
> @@ -849,17 +849,17 @@ int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_
>
>         /* check if we got everything */
>         if (!ctx->data) {
> -               dev_dbg(&intf->dev, "CDC Union missing and no IAD found\n");
> +               dev_err(&intf->dev, "CDC Union missing and no IAD found\n");
>                 goto error;
>         }
>         if (cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting)) {
>                 if (!ctx->mbim_desc) {
> -                       dev_dbg(&intf->dev, "MBIM functional descriptor missing\n");
> +                       dev_err(&intf->dev, "MBIM functional descriptor missing\n");
>                         goto error;
>                 }
>         } else {
>                 if (!ctx->ether_desc || !ctx->func_desc) {
> -                       dev_dbg(&intf->dev, "NCM or ECM functional descriptors missing\n");
> +                       dev_err(&intf->dev, "NCM or ECM functional descriptors missing\n");
>                         goto error;
>                 }
>         }
> @@ -868,7 +868,7 @@ int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_
>         if (ctx->data != ctx->control) {
>                 temp = usb_driver_claim_interface(driver, ctx->data, dev);
>                 if (temp) {
> -                       dev_dbg(&intf->dev, "failed to claim data intf\n");
> +                       dev_err(&intf->dev, "failed to claim data intf\n");
>                         goto error;
>                 }
>         }
> @@ -924,7 +924,7 @@ int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_
>         if (ctx->ether_desc) {
>                 temp = usbnet_get_ethernet_addr(dev, ctx->ether_desc->iMACAddress);
>                 if (temp) {
> -                       dev_dbg(&intf->dev, "failed to get mac address\n");
> +                       dev_err(&intf->dev, "failed to get mac address\n");
>                         goto error2;
>                 }
>                 dev_info(&intf->dev, "MAC-Address: %pM\n", dev->net->dev_addr);
> --
> 2.29.2
>