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-rw-r--r--chardev/char.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/chardev/char.c b/chardev/char.c
index 152dde5327..ccba36bafb 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -193,6 +193,8 @@ void qemu_chr_be_update_read_handlers(Chardev *s,
{
ChardevClass *cc = CHARDEV_GET_CLASS(s);
+ assert(qemu_chr_has_feature(s, QEMU_CHAR_FEATURE_GCONTEXT)
+ || !context);
s->gcontext = context;
if (cc->chr_update_read_handler) {
cc->chr_update_read_handler(s);
@@ -240,6 +242,15 @@ static void char_init(Object *obj)
chr->logfd = -1;
qemu_mutex_init(&chr->chr_write_lock);
+
+ /*
+ * Assume if chr_update_read_handler is implemented it will
+ * take the updated gcontext into account.
+ */
+ if (CHARDEV_GET_CLASS(chr)->chr_update_read_handler) {
+ qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_GCONTEXT);
+ }
+
}
static int null_chr_write(Chardev *chr, const uint8_t *buf, int len)