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-rw-r--r--drivers/firewire/core-cdev.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c
index 8be720b278b..bbb8160e2c9 100644
--- a/drivers/firewire/core-cdev.c
+++ b/drivers/firewire/core-cdev.c
@@ -968,7 +968,8 @@ static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg)
if (ctx->header_size == 0) {
if (u.packet.header_length > 0)
return -EINVAL;
- } else if (u.packet.header_length % ctx->header_size != 0) {
+ } else if (u.packet.header_length == 0 ||
+ u.packet.header_length % ctx->header_size != 0) {
return -EINVAL;
}
header_length = 0;