jackcartersmith/xilinx-usb-driver
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allow concurrent access to the cable

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This commit is contained in:
michael 2007-03-11 12:52:26 +00:00
parent 7216ce6cb7
commit 010cbaa6cd
1 changed files with 10 additions and 0 deletions
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10
usb-driver.c
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@ -47,6 +47,7 @@ static int modules_read = 0;
static struct usb_bus *busses = NULL;
static struct usb_device *usbdevice;
static usb_dev_handle *usb_devhandle = NULL;
static int usbinterface = -1;
static unsigned long card_type;
static int ints_enabled = 0;
static pthread_mutex_t int_wait = PTHREAD_MUTEX_INITIALIZER;
@ -382,6 +383,7 @@ int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) {
ret = usb_claim_interface(usb_devhandle, usbdevice->config[0].interface[usi->dwInterfaceNum].altsetting[usi->dwAlternateSetting].bInterfaceNumber);
if (!ret) {
if(!ret) {
usbinterface = usbdevice->config[0].interface[usi->dwInterfaceNum].altsetting[usi->dwAlternateSetting].bInterfaceNumber;
ret = usb_set_altinterface(usb_devhandle, usi->dwAlternateSetting);
if (ret)
fprintf(stderr, "usb_set_altinterface: %d\n", ret);
@ -712,6 +714,14 @@ int close(int fd) {
if (fd == windrvrfd && windrvrfd >= 0) {
DPRINTF("close windrvrfd\n");
if (usbinterface >= 0)
usb_release_interface(usb_devhandle, usbinterface);
if (usb_devhandle)
usb_close(usb_devhandle);
usb_devhandle = NULL;
usbinterface = -1;
windrvrfd = -1;
}