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qemu-char: Add qemu_chr_fe_claim / _release helper functions

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Add qemu_chr_fe_claim / _release helper functions for properly dealing with
avail_connections.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Message-id: 1364412581-3672-2-git-send-email-hdegoede@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Hans de Goede 2013-03-27 20:29:39 +01:00 • committed by Anthony Liguori
parent 4dbb9ed326
commit 44c473decd
3 changed files with 54 additions and 3 deletions
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5
hw/qdev-properties-system.c
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@ -123,11 +123,10 @@ static int parse_chr(DeviceState *dev, const char *str, void **ptr)
if (chr == NULL) {
return -ENOENT;
}
if (chr->avail_connections < 1) {
if (qemu_chr_fe_claim(chr) != 0) {
return -EEXIST;
}
*ptr = chr;
--chr->avail_connections;
return 0;
}
@ -140,7 +139,7 @@ static void release_chr(Object *obj, const char *name, void *opaque)
if (chr) {
qemu_chr_add_handlers(chr, NULL, NULL, NULL, NULL);
++chr->avail_connections;
qemu_chr_fe_release(chr);
}
}