diff options
Diffstat (limited to 'libusb/os/driver/release_interface.c')
-rw-r--r-- | libusb/os/driver/release_interface.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/libusb/os/driver/release_interface.c b/libusb/os/driver/release_interface.c new file mode 100644 index 0000000..0b8987b --- /dev/null +++ b/libusb/os/driver/release_interface.c @@ -0,0 +1,69 @@ +/* LIBUSB-WIN32, Generic Windows USB Library + * Copyright (c) 2002-2005 Stephan Meyer <ste_meyer@web.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + + +#include "libusb_driver.h" + + + +NTSTATUS release_interface(libusb_device_t *dev, int interface) +{ + DEBUG_MESSAGE("release_interface(): interface %d", interface); + + if(!dev->config.value) + { + DEBUG_ERROR("release_interface(): device is not configured"); + return STATUS_INVALID_DEVICE_STATE; + } + + if(interface >= LIBUSB0_MAX_NUMBER_OF_INTERFACES) + { + DEBUG_ERROR("release_interface(): interface number %d too high", + interface); + return STATUS_INVALID_PARAMETER; + } + + if(!dev->config.interfaces[interface].valid) + { + DEBUG_ERROR("release_interface(): invalid interface %02d", interface); + return STATUS_INVALID_PARAMETER; + } + + if(!dev->config.interfaces[interface].claimed) + { + DEBUG_ERROR("claim_interface(): could not release interface %d, " + "interface is not claimed", interface); + return STATUS_INVALID_DEVICE_STATE; + } + + dev->config.interfaces[interface].claimed = FALSE; + + return STATUS_SUCCESS; +} + +NTSTATUS release_all_interfaces(libusb_device_t *dev) +{ + int i; + + for(i = 0; i < LIBUSB0_MAX_NUMBER_OF_INTERFACES; i++) + { + dev->config.interfaces[i].claimed = FALSE; + } + + return STATUS_SUCCESS; +} |