Re: [PATCH 2/3] USB: serial: Handle the error from tty_register_device*()

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On Thu, Feb 05, 2015 at 02:36:24PM +0100, Takashi Iwai wrote:

No commit message?

> Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
> ---
>  drivers/usb/serial/bus.c | 11 +++++++++--
>  1 file changed, 9 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/usb/serial/bus.c b/drivers/usb/serial/bus.c
> index b730366d524f..4b34afc51535 100644
> --- a/drivers/usb/serial/bus.c
> +++ b/drivers/usb/serial/bus.c
> @@ -80,8 +80,15 @@ static int usb_serial_device_probe(struct device *dev)
>  	}
>  
>  	minor = port->minor;
> -	tty_register_device_attr(usb_serial_tty_driver, minor, dev, NULL,
> -				 usb_serial_dev_groups);
> +	dev = tty_register_device_attr(usb_serial_tty_driver, minor, dev, NULL,
> +				       usb_serial_dev_groups);

Please add a second struct device *tdev for the tty device, rather than
reuse dev here.

> +	if (IS_ERR(dev)) {
> +		retval = PTR_ERR(dev);
> +		if (driver->port_remove)
> +			driver->port_remove(port);
> +		goto exit_with_autopm;
> +	}
> +
>  	dev_info(&port->serial->dev->dev,
>  		 "%s converter now attached to ttyUSB%d\n",
>  		 driver->description, minor);

Looks good otherwise.

Can you resend this one separately after you drop patch 1/3? Make sure
you remove the port device attribute in the error path as well after you
rebase.

Thanks,
Johan
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