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qemu-char: add create to register_char_driver

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Having creation as a member of the CharDriver struct removes the need
to export functions for qemu-char.c's usage.  After the conversion,
chardev backends implemented outside qemu-char.c will not need a stub
creation function anymore.

Ultimately all drivers will be converted.  For now, support the case
where cd->create == NULL.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2015-09-29 14:55:59 +02:00
parent d809ab9521
commit 4ca172817a
7 changed files with 142 additions and 109 deletions
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4
include/sysemu/char.h
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@ -345,7 +345,9 @@ bool chr_is_ringbuf(const CharDriverState *chr);
QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename);
void register_char_driver(const char *name, ChardevBackendKind kind,
void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp));
void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp),
CharDriverState *(*create)(const char *id, ChardevBackend *backend,
ChardevReturn *ret, Error **errp));
/* add an eventfd to the qemu devices that are polled */
CharDriverState *qemu_chr_open_eventfd(int eventfd);