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-rw-r--r--drivers/firewire/ohci.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index f1497b1fcf2..c0572283b93 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;