Re: [alsa-devel] [PATCH 01/17] ALSA: line6: Split to each driver

On Mon, Jan 19, 2015 at 9:54 AM, Takashi Iwai tiwai@suse.de wrote:

-static int line6_probe(struct usb_interface *interface,

•                  const struct usb_device_id *id)
  

+int line6_probe(struct usb_interface *interface,

•           struct usb_line6 *line6,
  

•           const struct line6_properties *properties,
  

•           int (*private_init)(struct usb_interface *, struct usb_line6 *))
  

{

•   enum line6_device_type devtype;
    struct usb_device *usbdev;
  

•   struct usb_line6 *line6;
  

•   const struct line6_properties *properties;
    int interface_number;
  

•   int size = 0;
    int ret;
  
  

•   if (interface == NULL)
  

•           return -ENODEV;
  

•   if (!interface) {
  

•           ret = -ENODEV;
  

•           goto err_put;
  

•   }
    usbdev = interface_to_usbdev(interface);
  

•   if (usbdev == NULL)
  

•           return -ENODEV;
  

•   if (!usbdev) {
  

•           ret = -ENODEV;
  

•           goto err_put;
  

•   }
  

These NULL checks are unnecessary, right? We could just assign `usbdev' at declaration and be done with it. But maybe that should be another patch.

Chris