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Merge remote-tracking branch 'alon/libcacard_ccid.2' into staging

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# By Cole Robinson
# Via Alon Levy
* alon/libcacard_ccid.2:
  ccid: Fix crash when backend isn't specified

Message-id: 20130426234357.GA12457@garlic.tami
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Anthony Liguori 2013-04-29 08:26:39 -05:00
parent 903ce9fefa ae12e3a643
commit 45dddd90c3
1 changed files with 8 additions and 2 deletions
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10
hw/usb/ccid-card-emulated.c
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@ -503,9 +503,15 @@ static int emulated_initfn(CCIDCardState *base)
if (init_pipe_signaling(card) < 0) {
return -1;
}
card->backend = parse_enumeration(card->backend_str, backend_enum_table, 0);
card->backend = 0;
if (card->backend_str) {
card->backend = parse_enumeration(card->backend_str,
backend_enum_table, 0);
}
if (card->backend == 0) {
printf("unknown backend, must be one of:\n");
printf("backend must be one of:\n");
for (ptable = backend_enum_table; ptable->name != NULL; ++ptable) {
printf("%s\n", ptable->name);
}