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qdev: Add a 'free' method to disassociate chardev from qdev device

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When a device is removed, remove the association with a chardev, if any,
so that the chardev can be re-used later for other devices.

Reported-by: Qunfang Zhang <qzhang@redhat.com>
Fix-suggested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Amit Shah 2012-01-13 15:29:47 +05:30 committed by Anthony Liguori
parent 8600361542
commit a87f3e8b08
1 changed files with 11 additions and 0 deletions
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11
hw/qdev-properties.c
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@ -680,6 +680,16 @@ static int parse_chr(DeviceState *dev, Property *prop, const char *str)
return 0;
}
static void free_chr(DeviceState *dev, Property *prop)
{
CharDriverState **ptr = qdev_get_prop_ptr(dev, prop);
if (*ptr) {
qemu_chr_add_handlers(*ptr, NULL, NULL, NULL, NULL);
}
}
static int print_chr(DeviceState *dev, Property *prop, char *dest, size_t len)
{
CharDriverState **ptr = qdev_get_prop_ptr(dev, prop);
@ -699,6 +709,7 @@ PropertyInfo qdev_prop_chr = {
.print = print_chr,
.get = get_generic,
.set = set_generic,
.free = free_chr,
};
/* --- netdev device --- */