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MTP driver: Workaround for LibMTP no longer returning device serial numbers on some systems

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Fixes #2810 (MTP Kindle Serial not detected)
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Kovid Goyal 2025-07-16 21:57:09 +05:30
parent b67e54744a
commit 1ce22c9aea
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 5 additions and 2 deletions
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7
src/calibre/devices/mtp/unix/libmtp.c
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@ -265,10 +265,13 @@ Device_init(Device *self, PyObject *args, PyObject *kwds)
if (self->model_name == NULL) { self->model_name = Py_None; Py_INCREF(Py_None); }
if (serial_number != NULL) {
self->serial_number = PyUnicode_FromString(serial_number);
if (serial_number[0]) self->serial_number = PyUnicode_FromString(serial_number);
free(serial_number);
}
if (self->serial_number == NULL) { self->serial_number = Py_None; Py_INCREF(Py_None); }
if (self->serial_number == NULL) {
self->serial_number = usb_serialnum == NULL ? Py_None : usb_serialnum;
Py_INCREF(self->serial_number);
}
if (device_version != NULL) {
self->device_version = PyUnicode_FromString(device_version);