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-rw-r--r--hw/cxl/cxl-mailbox-utils.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index 3cea8b17a8..bc1bb18844 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -425,7 +425,7 @@ void cxl_process_mailbox(CXLDeviceState *cxl_dstate)
cxl_cmd = &cxl_cmd_set[set][cmd];
h = cxl_cmd->handler;
if (h) {
- if (len == cxl_cmd->in) {
+ if (len == cxl_cmd->in || cxl_cmd->in == ~0) {
cxl_cmd->payload = cxl_dstate->mbox_reg_state +
A_CXL_DEV_CMD_PAYLOAD;
ret = (*h)(cxl_cmd, cxl_dstate, &len);