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hw/usb: fix mistaken de-initialization of CCID state

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In previous commit:

  commit 7dea29e4af
  Author: Li Qiang <liq3ea@gmail.com>
  Date:   Fri Oct 19 03:50:36 2018 -0700

    hw: ccid-card-emulated: cleanup resource when realize in error path

The emulated_realize method was changed so that it jumps to a cleanup
label to de-initialize state upon error. This change failed to ensure
the success path exited the method before this point though. So the
mutexes are always destroyed even in normal operation. The result is
as crashtastic as expected:

$ qemu-system-x86_64 -usb -device usb-ccid,id=ccid0 -device ccid-card-emulated,backend=nss-emulated,id=smartcard0,bus=ccid0.0
qemu-system-x86_64: util/qemu-thread-posix.c:64: qemu_mutex_lock_impl: Assertion `mutex->initialized' failed.
Aborted (core dumped)

Fixes: 7dea29e4af
Reported-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20181221134115.27973-1-berrange@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Daniel P. Berrangé 2018-12-21 13:41:15 +00:00 committed by Gerd Hoffmann
parent e59dbbac03
commit 3fd2092fd1
1 changed files with 2 additions and 0 deletions
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2
hw/usb/ccid-card-emulated.c
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@ -549,6 +549,8 @@ static void emulated_realize(CCIDCardState *base, Error **errp)
qemu_thread_create(&card->apdu_thread_id, "ccid/apdu", handle_apdu_thread,
card, QEMU_THREAD_JOINABLE);
return;
out2:
clean_event_notifier(card);
out1: