staging: comedi: usbduxfast: remove usbduxfast_attach

This driver originally used the 'attach' method in order to get
the firmware for the device from the comedi_config utility. It
now uses request_firmware_nowait() in the usb_driver probe to
get this firmware.

Since this driver has an 'attach_usb' method in the comedi_driver,
the 'attach' method can be removed because it is now optional.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 3 insertions, 51 deletions

diff --git a/drivers/staging/comedi/drivers/usbduxfast.c b/drivers/staging/comedi/drivers/usbduxfast.c
index 3f68fc396301..0f6c1392f6ce 100644
--- a/drivers/staging/comedi/drivers/usbduxfast.c
+++ b/drivers/staging/comedi/drivers/usbduxfast.c
@@ -1430,10 +1430,8 @@ static void tidy_up(struct usbduxfastsub_s *udfs)
         udfs->ai_cmd_running = 0;
 }
 
-/* common part of attach and attach_usb */
 static int usbduxfast_attach_common(struct comedi_device *dev,
-                                    struct usbduxfastsub_s *udfs,
-                                    void *aux_data, int aux_len)
+                                    struct usbduxfastsub_s *udfs)
 {
         int ret;
         struct comedi_subdevice *s;
@@ -1441,9 +1439,6 @@ static int usbduxfast_attach_common(struct comedi_device *dev,
         down(&udfs->sem);
         /* pointer back to the corresponding comedi device */
         udfs->comedidev = dev;
-        /* trying to upload the firmware into the chip */
-        if (aux_data)
-                firmwareUpload(udfs, aux_data, aux_len);
         dev->board_name = "usbduxfast";
         ret = comedi_alloc_subdevices(dev, 1);
         if (ret) {
@@ -1485,48 +1480,6 @@ static int usbduxfast_attach_common(struct comedi_device *dev,
         return 0;
 }
 
-/* is called for COMEDI_DEVCONFIG ioctl (when comedi_config is run) */
-static int usbduxfast_attach(struct comedi_device *dev,
-                             struct comedi_devconfig *it)
-{
-        int ret;
-        int index;
-        int i;
-        void *aux_data;
-        int aux_len;
-
-        dev->private = NULL;
-
-        aux_data = comedi_aux_data(it->options, 0);
-        aux_len = it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH];
-        if (aux_data == NULL)
-                aux_len = 0;
-        else if (aux_len == 0)
-                aux_data = NULL;
-        down(&start_stop_sem);
-        /*
-         * find a valid device which has been detected by the
-         * probe function of the usb
-         */
-        index = -1;
-        for (i = 0; i < NUMUSBDUXFAST; i++) {
-                if (usbduxfastsub[i].probed && !usbduxfastsub[i].attached) {
-                        index = i;
-                        break;
-                }
-        }
-        if (index < 0) {
-                dev_err(dev->class_dev,
-                        "usbduxfast: error: attach failed, no usbduxfast devs connected to the usb bus.\n");
-                ret = -ENODEV;
-        } else
-                ret = usbduxfast_attach_common(dev, &usbduxfastsub[index],
-                                               aux_data, aux_len);
-        up(&start_stop_sem);
-        return ret;
-}
-
-/* is called from comedi_usb_auto_config() */
 static int usbduxfast_attach_usb(struct comedi_device *dev,
                                  struct usb_interface *uinterf)
 {
@@ -1545,7 +1498,7 @@ static int usbduxfast_attach_usb(struct comedi_device *dev,
                        "usbduxfast: error: attach_usb failed, already attached\n");
                 ret = -ENODEV;
         } else
-                ret = usbduxfast_attach_common(dev, udfs, NULL, 0);
+                ret = usbduxfast_attach_common(dev, udfs);
         up(&start_stop_sem);
         return ret;
 }
@@ -1568,9 +1521,8 @@ static void usbduxfast_detach(struct comedi_device *dev)
 static struct comedi_driver usbduxfast_driver = {
         .driver_name    = "usbduxfast",
         .module         = THIS_MODULE,
-        .attach         = usbduxfast_attach,
-        .detach         = usbduxfast_detach,
         .attach_usb     = usbduxfast_attach_usb,
+        .detach         = usbduxfast_detach,
 };
 
 static void usbduxfast_firmware_request_complete_handler(const struct firmware