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Don't enumerate devices we can't open

This commit is contained in:
Sam Lantinga 2020-01-26 12:40:32 -08:00
parent adb53d0b1f
commit 5e649983e7
1 changed files with 30 additions and 27 deletions
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57
src/hidapi/libusb/hid.c
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@ -608,25 +608,25 @@ struct hid_device_info HID_API_EXPORT *hid_enumerate(unsigned short vendor_id,
/* Check the VID/PID against the arguments */
if ((vendor_id == 0x0 || vendor_id == dev_vid) &&
(product_id == 0x0 || product_id == dev_pid)) {
struct hid_device_info *tmp;
/* VID/PID match. Create the record. */
tmp = (struct hid_device_info*) calloc(1, sizeof(struct hid_device_info));
if (cur_dev) {
cur_dev->next = tmp;
}
else {
root = tmp;
}
cur_dev = tmp;
/* Fill out the record */
cur_dev->next = NULL;
cur_dev->path = make_path(dev, interface_num);
res = libusb_open(dev, &handle);
if (res >= 0) {
struct hid_device_info *tmp;
/* VID/PID match. Create the record. */
tmp = (struct hid_device_info*) calloc(1, sizeof(struct hid_device_info));
if (cur_dev) {
cur_dev->next = tmp;
}
else {
root = tmp;
}
cur_dev = tmp;
/* Fill out the record */
cur_dev->next = NULL;
cur_dev->path = make_path(dev, interface_num);
/* Serial Number */
if (desc.iSerialNumber > 0)
cur_dev->serial_number =
@ -704,19 +704,22 @@ struct hid_device_info HID_API_EXPORT *hid_enumerate(unsigned short vendor_id,
#endif /* INVASIVE_GET_USAGE */
libusb_close(handle);
}
/* VID/PID */
cur_dev->vendor_id = dev_vid;
cur_dev->product_id = dev_pid;
/* Release Number */
cur_dev->release_number = desc.bcdDevice;
/* VID/PID */
cur_dev->vendor_id = dev_vid;
cur_dev->product_id = dev_pid;
/* Interface Number */
cur_dev->interface_number = interface_num;
cur_dev->interface_class = intf_desc->bInterfaceClass;
cur_dev->interface_subclass = intf_desc->bInterfaceSubClass;
cur_dev->interface_protocol = intf_desc->bInterfaceProtocol;
/* Release Number */
cur_dev->release_number = desc.bcdDevice;
/* Interface Number */
cur_dev->interface_number = interface_num;
cur_dev->interface_class = intf_desc->bInterfaceClass;
cur_dev->interface_subclass = intf_desc->bInterfaceSubClass;
cur_dev->interface_protocol = intf_desc->bInterfaceProtocol;
} else
LOG("Can't open device 0x%.4x/0x%.4x during enumeration: %d\n", dev_vid, dev_pid, res);
}
}
} /* altsettings */