usbfs_snoop 111 drivers/usb/core/devio.c static bool usbfs_snoop; usbfs_snoop 112 drivers/usb/core/devio.c module_param(usbfs_snoop, bool, S_IRUGO | S_IWUSR); usbfs_snoop 113 drivers/usb/core/devio.c MODULE_PARM_DESC(usbfs_snoop, "true to log all usbfs traffic"); usbfs_snoop 122 drivers/usb/core/devio.c if (usbfs_snoop) \ usbfs_snoop 476 drivers/usb/core/devio.c if (!usbfs_snoop) usbfs_snoop 516 drivers/usb/core/devio.c if (!usbfs_snoop || len == 0)