staging: line6: fix playback urb transfer buffer calculation
The playback urb transfer buffer calculation does not factor in
LINE6_ISO_PACKETS. Buffer memory is organized like this in the driver:
Buffer 0 Buffer 1 ...
[Packet 0, Packet 1, ...][Packet 0, Packet 1, ...][Packet 0, ...]
However, we're lucky that LINE6_ISO_PACKETS is currently defined as 1 so
this patch does not change any behavior. It's still worth including
this fix in case the LINE6_ISO_PACKETS value is changed in the future.
Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
Signed-off-by: Markus Grabner <grabner@icg.tugraz.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/line6/playback.c b/drivers/staging/line6/playback.c
index ed1b9bd..b17c0a7 100644
--- a/drivers/staging/line6/playback.c
+++ b/drivers/staging/line6/playback.c
@@ -192,7 +192,7 @@
urb_frames = urb_size / bytes_per_frame;
urb_out->transfer_buffer =
line6pcm->buffer_out +
- line6pcm->max_packet_size * line6pcm->index_out;
+ LINE6_ISO_PACKETS * line6pcm->max_packet_size * line6pcm->index_out;
urb_out->transfer_buffer_length = urb_size;
urb_out->context = line6pcm;