migration: pre_save return int
Modify the pre_save method on VMStateDescription to return an int
rather than void so that it potentially can fail.
Changed zillions of devices to make them return 0; the only
case I've made it return non-0 is hw/intc/s390_flic_kvm.c that already
had an error_report/return case.
Note: If you add an error exit in your pre_save you must emit
an error_report to say why.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20170925112917.21340-2-dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
diff --git a/hw/input/tsc210x.c b/hw/input/tsc210x.c
index b068343..75ac8c2 100644
--- a/hw/input/tsc210x.c
+++ b/hw/input/tsc210x.c
@@ -976,10 +976,12 @@
s->i2s_rx_rate = in;
}
-static void tsc210x_pre_save(void *opaque)
+static int tsc210x_pre_save(void *opaque)
{
TSC210xState *s = (TSC210xState *) opaque;
s->now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
+
+ return 0;
}
static int tsc210x_post_load(void *opaque, int version_id)
