diff options
author | Paolo Bonzini <pbonzini@redhat.com> | 2016-06-20 15:02:40 +0200 |
---|---|---|
committer | Paolo Bonzini <pbonzini@redhat.com> | 2016-06-29 14:03:47 +0200 |
commit | 6f1de6b70d857d5e316ae6fd908f52818b827b08 (patch) | |
tree | 1a0c8e85a0d1046373cdad821e9dda0025046be9 /qemu-char.c | |
parent | b0585e7e07982daa578c3bfef7f6843c89f110a8 (diff) |
char: change qemu_chr_fe_add_watch to return unsigned
g_source_attach can return any value between 1 and UINT_MAX if you let
QEMU run long enough. However, qemu_chr_fe_add_watch can also return
a negative errno value when the device is disconnected or does not
support chr_add_watch. Change it to return zero to avoid overloading
these values.
Fix the cadence_uart which asserts in this case (easily obtained with
"-serial pty").
Tested-by: Bret Ketchum <bcketchum@gmail.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'qemu-char.c')
-rw-r--r-- | qemu-char.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/qemu-char.c b/qemu-char.c index 84f49acbac..8575c54c98 100644 --- a/qemu-char.c +++ b/qemu-char.c @@ -3966,19 +3966,19 @@ void qemu_chr_fe_event(struct CharDriverState *chr, int event) } } -int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond, - GIOFunc func, void *user_data) +guint qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond, + GIOFunc func, void *user_data) { GSource *src; guint tag; if (s->chr_add_watch == NULL) { - return -ENOSYS; + return 0; } src = s->chr_add_watch(s, cond); if (!src) { - return -EINVAL; + return 0; } g_source_set_callback(src, (GSourceFunc)func, user_data, NULL); |