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-rw-r--r--sound/usb/line6/pcm.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/sound/usb/line6/pcm.c b/sound/usb/line6/pcm.c
index 72c6f8e82a7e..78c2d6cab3b5 100644
--- a/sound/usb/line6/pcm.c
+++ b/sound/usb/line6/pcm.c
@@ -560,6 +560,11 @@ int line6_init_pcm(struct usb_line6 *line6,
line6pcm->max_packet_size_out =
usb_maxpacket(line6->usbdev,
usb_sndisocpipe(line6->usbdev, ep_write), 1);
+ if (!line6pcm->max_packet_size_in || !line6pcm->max_packet_size_out) {
+ dev_err(line6pcm->line6->ifcdev,
+ "cannot get proper max packet size\n");
+ return -EINVAL;
+ }
spin_lock_init(&line6pcm->out.lock);
spin_lock_init(&line6pcm->in.lock);