return code; \
} while(0);
+#define ftdi_error_return_free_device_list(code, str, devs) do { \
+ libusb_free_device_list(devs,1); \
+ ftdi->error_str = str; \
+ return code; \
+ } while(0);
+
/**
Internal function to close usb device pointer.
*/
int ftdi_set_interface(struct ftdi_context *ftdi, enum ftdi_interface interface)
{
- if (ftdi == NULL || ftdi->usb_dev == NULL)
+ if (ftdi == NULL)
ftdi_error_return(-2, "USB device unavailable");
switch (interface)
free(ftdi->readbuffer);
ftdi->readbuffer = NULL;
}
+ libusb_exit(NULL);
}
/**
{
struct libusb_device_descriptor desc;
struct libusb_config_descriptor *config0;
- int cfg, cfg0;
+ int cfg, cfg0, detach_errno = 0;
if (ftdi == NULL)
ftdi_error_return(-8, "ftdi context invalid");
cfg0 = config0->bConfigurationValue;
libusb_free_config_descriptor (config0);
-#ifdef LIBUSB_HAS_GET_DRIVER_NP
// Try to detach ftdi_sio kernel module.
- // Returns ENODATA if driver is not loaded.
//
// The return code is kept in a separate variable and only parsed
// if usb_set_configuration() or usb_claim_interface() fails as the
// detach operation might be denied and everything still works fine.
// Likely scenario is a static ftdi_sio kernel module.
- ret = libusb_detach_kernel_driver(ftdi->usb_dev, ftdi->interface);
- if (ret < 0 && ret != LIBUSB_ERROR_NOT_FOUND)
- ftdi_error_return(-11, "libusb_detach_kernel_driver () failed");
-#endif
+ if (libusb_detach_kernel_driver(ftdi->usb_dev, ftdi->interface) !=0)
+ detach_errno = errno;
if (libusb_get_configuration (ftdi->usb_dev, &cfg) < 0)
ftdi_error_return(-12, "libusb_get_configuration () failed");
-
// set configuration (needed especially for windows)
// tolerate EBUSY: one device with one configuration, but two interfaces
// and libftdi sessions to both interfaces (e.g. FT2232)
if (libusb_set_configuration(ftdi->usb_dev, cfg0) < 0)
{
ftdi_usb_close_internal (ftdi);
- ftdi_error_return(-3, "unable to set usb configuration. Make sure ftdi_sio is unloaded!");
+ if(detach_errno == EPERM)
+ {
+ ftdi_error_return(-8, "inappropriate permissions on device!");
+ }
+ else
+ {
+ ftdi_error_return(-3, "unable to set usb configuration. Make sure the default FTDI driver is not in use");
+ }
}
}
if (libusb_claim_interface(ftdi->usb_dev, ftdi->interface) < 0)
{
ftdi_usb_close_internal (ftdi);
- ftdi_error_return(-5, "unable to claim usb device. Make sure ftdi_sio is unloaded!");
+ if(detach_errno == EPERM)
+ {
+ ftdi_error_return(-8, "inappropriate permissions on device!");
+ }
+ else
+ {
+ ftdi_error_return(-5, "unable to claim usb device. Make sure the default FTDI driver is not in use");
+ }
}
if (ftdi_usb_reset (ftdi) != 0)
if (libusb_init(NULL) < 0)
ftdi_error_return(-11, "libusb_init() failed");
- if (libusb_get_device_list(NULL, &devs) < 0)
- ftdi_error_return(-12, "libusb_get_device_list() failed");
-
if (ftdi == NULL)
ftdi_error_return(-11, "ftdi context invalid");
+ if (libusb_get_device_list(NULL, &devs) < 0)
+ ftdi_error_return(-12, "libusb_get_device_list() failed");
+
while ((dev = devs[i++]) != NULL)
{
struct libusb_device_descriptor desc;
+ int res;
if (libusb_get_device_descriptor(dev, &desc) < 0)
- ftdi_error_return(-13, "libusb_get_device_descriptor() failed");
+ ftdi_error_return_free_device_list(-13, "libusb_get_device_descriptor() failed", devs);
if (desc.idVendor == vendor && desc.idProduct == product)
{
if (libusb_open(dev, &ftdi->usb_dev) < 0)
- ftdi_error_return(-4, "usb_open() failed");
+ ftdi_error_return_free_device_list(-4, "usb_open() failed", devs);
if (description != NULL)
{
if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iProduct, (unsigned char *)string, sizeof(string)) < 0)
{
libusb_close (ftdi->usb_dev);
- ftdi_error_return(-8, "unable to fetch product description");
+ ftdi_error_return_free_device_list(-8, "unable to fetch product description", devs);
}
if (strncmp(string, description, sizeof(string)) != 0)
{
if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iSerialNumber, (unsigned char *)string, sizeof(string)) < 0)
{
ftdi_usb_close_internal (ftdi);
- ftdi_error_return(-9, "unable to fetch serial number");
+ ftdi_error_return_free_device_list(-9, "unable to fetch serial number", devs);
}
if (strncmp(string, serial, sizeof(string)) != 0)
{
continue;
}
- return ftdi_usb_open_dev(ftdi, dev);
+ res = ftdi_usb_open_dev(ftdi, dev);
+ libusb_free_device_list(devs,1);
+ return res;
}
}
// device not found
- ftdi_error_return(-3, "device not found");
+ ftdi_error_return_free_device_list(-3, "device not found", devs);
}
/**
/* XXX: This doesn't handle symlinks/odd paths/etc... */
if (sscanf (description + 2, "%u/%u", &bus_number, &device_address) != 2)
- ftdi_error_return(-11, "illegal description format");
+ ftdi_error_return_free_device_list(-11, "illegal description format", devs);
while ((dev = devs[i++]) != NULL)
{
+ int ret;
if (bus_number == libusb_get_bus_number (dev)
&& device_address == libusb_get_device_address (dev))
- return ftdi_usb_open_dev(ftdi, dev);
+ {
+ ret = ftdi_usb_open_dev(ftdi, dev);
+ libusb_free_device_list(devs,1);
+ return ret;
+ }
}
// device not found
- ftdi_error_return(-3, "device not found");
+ ftdi_error_return_free_device_list(-3, "device not found", devs);
}
else if (description[0] == 'i' || description[0] == 's')
{
}
/**
+ Frees allocated memory in eeprom.
+
+ \param eeprom Pointer to ftdi_eeprom
+*/
+void ftdi_eeprom_free(struct ftdi_eeprom *eeprom)
+{
+ if (eeprom->manufacturer != 0) {
+ free(eeprom->manufacturer);
+ eeprom->manufacturer = 0;
+ }
+ if (eeprom->product != 0) {
+ free(eeprom->product);
+ eeprom->product = 0;
+ }
+ if (eeprom->serial != 0) {
+ free(eeprom->serial);
+ eeprom->serial = 0;
+ }
+}
+
+/**
Build binary output from ftdi_eeprom structure.
Output is suitable for ftdi_write_eeprom().
git://developer.intra2net.com / libftdi / blobdiff