libusb: add debug message on adapter not found due to wrong serial

[openocd.git] / src / jtag / drivers / libusb1_common.c

diff --git a/src/jtag/drivers/libusb1_common.c b/src/jtag/drivers/libusb1_common.c
index f8b7c754c0eabd1f9f33fb801df1ff0651e56e3f..ec52a1bce272464b68c86405301efbf608620062 100644 (file)
--- a/src/jtag/drivers/libusb1_common.c
+++ b/src/jtag/drivers/libusb1_common.c
@@ -71,11 +71,12 @@ int jtag_libusb_open(const uint16_t vids[], const uint16_t pids[],
                struct jtag_libusb_device_handle **out)
 {
        int cnt, idx, errCode;
-       int retval = -ENODEV;
+       int retval = ERROR_FAIL;
+       bool serial_mismatch = false;
        struct jtag_libusb_device_handle *libusb_handle = NULL;
 
        if (libusb_init(&jtag_libusb_context) < 0)
-               return -ENODEV;
+               return ERROR_FAIL;
 
        cnt = libusb_get_device_list(jtag_libusb_context, &devs);
 
@@ -99,17 +100,23 @@ int jtag_libusb_open(const uint16_t vids[], const uint16_t pids[],
                /* Device must be open to use libusb_get_string_descriptor_ascii. */
                if (serial != NULL &&
                                !string_descriptor_equal(libusb_handle, dev_desc.iSerialNumber, serial)) {
+                       serial_mismatch = true;
                        libusb_close(libusb_handle);
                        continue;
                }
 
                /* Success. */
                *out = libusb_handle;
-               retval = 0;
+               retval = ERROR_OK;
+               serial_mismatch = false;
                break;
        }
        if (cnt >= 0)
                libusb_free_device_list(devs, 1);
+
+       if (serial_mismatch)
+               LOG_INFO("No device matches the serial string");
+
        return retval;
 }
 
@@ -187,7 +194,7 @@ int jtag_libusb_set_configuration(jtag_libusb_device_handle *devh,
 int jtag_libusb_choose_interface(struct jtag_libusb_device_handle *devh,
                unsigned int *usb_read_ep,
                unsigned int *usb_write_ep,
-               int bclass, int subclass, int protocol)
+               int bclass, int subclass, int protocol, int trans_type)
 {
        struct jtag_libusb_device *udev = jtag_libusb_get_device(devh);
        const struct libusb_interface *inter;
@@ -210,6 +217,8 @@ int jtag_libusb_choose_interface(struct jtag_libusb_device_handle *devh,
                                continue;
 
                        epdesc = &interdesc->endpoint[k];
+                       if (trans_type > 0 && (epdesc->bmAttributes & 0x3) != trans_type)
+                               continue;
 
                        uint8_t epnum = epdesc->bEndpointAddress;
                        bool is_input = epnum & 0x80;