Frontend device can be detached in run-time, which can lead to a "Chardev 'MUX' is busy" error (see the last patch with the test case implementation). This series implements frontend detach for the multiplexer based on bitset, which provides the ability to attach or detach frontend devices in any order.
Also first patches do some refactoring the purpose of which is to make integer unsigned where possible (such as sizes or lengths). v1->v2: * improve if condition and assert for bit verification Roman Penyaev (8): chardev/char: fix qemu_chr_is_busy() check chardev/chardev-internal: remove unused `max_size` struct member chardev/mux: use bool type for `linestart` and `term_got_escape` chardev/mux: convert size members to unsigned int chardev/mux: introduce `mux_chr_attach_frontend() call chardev/mux: switch mux frontends management to bitset chardev/mux: implement detach of frontends from mux tests/unit/test-char: implement a few mux remove test cases chardev/char-fe.c | 13 ++---- chardev/char-mux.c | 90 ++++++++++++++++++++++++++++---------- chardev/char.c | 2 +- chardev/chardev-internal.h | 16 ++++--- include/chardev/char-fe.h | 2 +- tests/unit/test-char.c | 24 +++++++++- 6 files changed, 105 insertions(+), 42 deletions(-) Signed-off-by: Roman Penyaev <r.peni...@gmail.com> Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com> Cc: qemu-devel@nongnu.org -- 2.34.1
