#include <linux/init.h>
#include <linux/module.h>
+#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/uaccess.h>
#include <linux/kref.h>
static struct usb_device_id usbtmc_devices[] = {
{ USB_INTERFACE_INFO(USB_CLASS_APP_SPEC, 3, 0), },
+ { USB_INTERFACE_INFO(USB_CLASS_APP_SPEC, 3, 1), },
{ 0, } /* terminating entry */
};
MODULE_DEVICE_TABLE(usb, usbtmc_devices);
{
struct usb_interface *intf;
struct usbtmc_device_data *data;
- int retval = -ENODEV;
+ int retval = 0;
intf = usb_find_interface(&usbtmc_driver, iminor(inode));
if (!intf) {
printk(KERN_ERR KBUILD_MODNAME
": can not find device for minor %d", iminor(inode));
+ retval = -ENODEV;
goto exit;
}
int retval;
int actual;
unsigned long int n_bytes;
- int n;
int remaining;
int done;
int this_part;
goto exit;
}
- n_bytes = 12 + this_part;
- if (this_part % 4)
- n_bytes += 4 - this_part % 4;
- for (n = 12 + this_part; n < n_bytes; n++)
- buffer[n] = 0;
+ n_bytes = roundup(12 + this_part, 4);
+ memset(buffer + 12 + this_part, 0, n_bytes - (12 + this_part));
retval = usb_bulk_msg(data->usb_dev,
usb_sndbulkpipe(data->usb_dev,