[PATCH] USBATM: handle urbs containing partial cells

The receive logic has always assumed that urbs contain an integral
number of ATM cells, which is a bit naughty, though it never caused
any problems with bulk transfers.  Isochronous urbs spank us soundly
for this.  Fixed thanks to this patch, mostly by Stanislaw Gruszka.

Signed-off-by: Duncan Sands <baldrick@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/usb/atm/usbatm.h b/drivers/usb/atm/usbatm.h
index 0e2caa0967c1..bdff534b941d 100644
--- a/drivers/usb/atm/usbatm.h
+++ b/drivers/usb/atm/usbatm.h
@@ -187,6 +187,13 @@ struct usbatm_data {
         struct sk_buff_head sndqueue;
         struct sk_buff *current_skb;    /* being emptied */
 
+        struct usbatm_vcc_data *cached_vcc;
+        int cached_vci;
+        short cached_vpi;
+
+        unsigned char *cell_buf;        /* holds partial rx cell */
+        unsigned int buf_usage;
+
         struct urb *urbs[0];
 };