diff options
Diffstat (limited to 'drivers/firewire')
| -rw-r--r-- | drivers/firewire/ohci.c | 4 |
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; |