mirror of
https://github.com/qmk/qmk_firmware.git
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33 lines
1.2 KiB
C
33 lines
1.2 KiB
C
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/* Found at https://www.linuxquestions.org/questions/linux-hardware-18/how-to-unclaim-usb-device-558138/#post3406986 */
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <linux/ioctl.h>
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#include <linux/usbdevice_fs.h>
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int main(int argc, char**argv)
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{
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struct usbdevfs_ioctl command;
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int ret;
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int fd;
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int i;
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if (argc>1) {
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fd = open(argv[1],O_RDWR);
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if (fd<1){
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perror("unable to open file");
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return 1;
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}
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for (i=0;i<255;i++){ // hack: should fetch how many interface there is.
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command.ifno = i;
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command.ioctl_code = USBDEVFS_DISCONNECT;
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command.data = NULL;
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ret = ioctl(fd, USBDEVFS_IOCTL, &command);
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if(ret!=-1)
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printf("un claimed interface %d %d\n",i,ret);
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}
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} else {
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printf ("usage: %s /dev/bus/usb/BUS/DEVICE\n",argv[0]);
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printf("Release all interfaces of this usb device for usage in virtualisation\n");
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}
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}
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