1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index f1497b1fcf2e..c0572283b93e 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -2706,6 +2706,10 @@ static int ohci_start_iso(struct fw_iso_context *base,
         u32 control = IR_CONTEXT_ISOCH_HEADER, match;
         int index;
 
+        /* the controller cannot start without any queued packets */
+        if (ctx->context.last->branch_address == 0)
+                return -ENODATA;
+
         switch (ctx->base.type) {
         case FW_ISO_CONTEXT_TRANSMIT:
                 index = ctx - ohci->it_context_list;