-/* usbreset -- send a USB port reset to a USB device */
-
-/*
-
-http://marc.info/?l=linux-usb-users&m=116827193506484&w=2
-
-and needs mounted usbfs filesystem
-
- sudo mount -t usbfs none /proc/bus/usb
-
-There is a way to suspend a USB device. In order to use it,
-you must have a kernel with CONFIG_PM_SYSFS_DEPRECATED turned on. To
-suspend a device, do (as root):
-
- echo -n 2 >/sys/bus/usb/devices/.../power/state
-
-where the "..." is the ID for your device. To unsuspend, do the same
-thing but with a "0" instead of the "2" above.
-
-Note that this mechanism is slated to be removed from the kernel within
-the next year. Hopefully some other mechanism will take its place.
-
-> To reset a
-> device?
-
-Here's a program to do it. You invoke it as either
-
- usbreset /proc/bus/usb/BBB/DDD
-or
- usbreset /dev/usbB.D
-
-depending on how your system is set up, where BBB and DDD are the bus and
-device address numbers.
-
-Alan Stern
-
-*/
-
-#include <stdio.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <sys/ioctl.h>
-
-#include <linux/usbdevice_fs.h>
-
-
-int main(int argc, char **argv)
-{
- const char *filename;
- int fd;
- int rc;
-
- if (argc != 2) {
- fprintf(stderr, "Usage: usbreset device-filename\n");
- return 1;
- }
- filename = argv[1];
-
- fd = open(filename, O_WRONLY);
- if (fd < 0) {
- perror("Error opening output file");
- return 1;
- }
-
- printf("Resetting USB device %s\n", filename);
- rc = ioctl(fd, USBDEVFS_RESET, 0);
- if (rc < 0) {
- perror("Error in ioctl");
- return 1;
- }
- printf("Reset successful\n");
-
- close(fd);
- return 0;
-}