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libusb: same logic to get the config descriptor for hid_open_path() and hid_enumerate() (#568)

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This commit is contained in:
Sam Lantinga
2023-06-07 01:54:10 -07:00
committed by GitHub
parent c6c4dd0243
commit 80e8d62bc1
1 changed files with 13 additions and 1 deletions
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libusb/hid.c
+13 -1
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@@ -698,6 +698,9 @@ struct hid_device_info HID_API_EXPORT *hid_enumerate(unsigned short vendor_id,
int j, k;
int res = libusb_get_device_descriptor(dev, &desc);
if (res < 0)
continue;
unsigned short dev_vid = desc.idVendor;
unsigned short dev_pid = desc.idProduct;
@@ -1089,11 +1092,20 @@ hid_device * HID_API_EXPORT hid_open_path(const char *path)
libusb_get_device_list(usb_context, &devs);
while ((usb_dev = devs[d++]) != NULL && !good_open) {
struct libusb_device_descriptor desc;
struct libusb_config_descriptor *conf_desc = NULL;
int j,k;
if (libusb_get_active_config_descriptor(usb_dev, &conf_desc) < 0)
res = libusb_get_device_descriptor(usb_dev, &desc);
if (res < 0)
continue;
res = libusb_get_active_config_descriptor(usb_dev, &conf_desc);
if (res < 0)
libusb_get_config_descriptor(usb_dev, 0, &conf_desc);
if (!conf_desc)
continue;
for (j = 0; j < conf_desc->bNumInterfaces && !good_open; j++) {
const struct libusb_interface *intf = &conf_desc->interface[j];
for (k = 0; k < intf->num_altsetting && !good_open; k++) {